YO26 postcode district: York and around

YO26 is a postcode district in England, with 885 postcodes in use in 7 sectors. It has postcodes in York and Upper Poppleton. It is split between 2 councils: York (611 postcodes) and North Yorkshire (274).

Postcodes in use
885
Sectors
7
Councils
2 councils
Places
2 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in YO26, by flood risk

Map of every postcode in YO26, by flood risk Of the 885 postcodes in YO26 that ONS places, 38 have a home or business at high risk, 10 are at medium risk at worst, 62 are at low risk at worst, 7 are at very low risk only and 768 are not on the Environment Agency's at-risk list. Places named: York, Upper Poppleton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A19A1036A1237 YO26 4AB: not on the flood risk listYO26 4AE: not on the flood risk listYO26 4LA: not on the flood risk listYO26 4LR: not on the flood risk listYO26 4LT: not on the flood risk listYO26 4QT: not on the flood risk listYO26 4RJ: not on the flood risk listYO26 4RL: not on the flood risk listYO26 4RN: not on the flood risk listYO26 4RR: not on the flood risk listYO26 4RT: not on the flood risk listYO26 4RW: not on the flood risk listYO26 4RY: not on the flood risk listYO26 4SF: not on the flood risk listYO26 4SN: not on the flood risk listYO26 4SS: not on the flood risk listYO26 4TU: not on the flood risk listYO26 4TY: not on the flood risk listYO26 4UF: not on the flood risk listYO26 4UJ: not on the flood risk listYO26 4UQ: not on the flood risk listYO26 4US: not on the flood risk listYO26 4UW: not on the flood risk listYO26 4WN: not on the flood risk listYO26 4WS: not on the flood risk listYO26 4WY: not on the flood risk listYO26 4XJ: not on the flood risk listYO26 5AA: not on the flood risk listYO26 5AB: not on the flood risk listYO26 5AD: not on the flood risk listYO26 5AE: not on the flood risk listYO26 5AF: not on the flood risk listYO26 5AG: not on the flood risk listYO26 5AL: not on the flood risk listYO26 5AN: not on the flood risk listYO26 5AP: not on the flood risk listYO26 5AW: not on the flood risk listYO26 5AZ: not on the flood risk listYO26 5BD: not on the flood risk listYO26 5BL: not on the flood risk listYO26 5BP: not on the flood risk listYO26 5BR: not on the flood risk listYO26 5BS: not on the flood risk listYO26 5BT: not on the flood risk listYO26 5BU: not on the flood risk listYO26 5BW: not on the flood risk listYO26 5BZ: not on the flood risk listYO26 5DA: not on the flood risk listYO26 5DD: not on the flood risk listYO26 5DE: not on the flood risk listYO26 5DH: not on the flood risk listYO26 5DR: not on the flood risk listYO26 5DS: not on the flood risk listYO26 5DW: not on the flood risk listYO26 5DY: not on the flood risk listYO26 5DZ: not on the flood risk listYO26 5EA: not on the flood risk listYO26 5EB: not on the flood risk listYO26 5EE: not on the flood risk listYO26 5EF: not on the flood risk listYO26 5EG: not on the flood risk listYO26 5EH: not on the flood risk listYO26 5EL: not on the flood risk listYO26 5EN: not on the flood risk listYO26 5ER: not on the flood risk listYO26 5ES: not on the flood risk listYO26 5EU: not on the flood risk listYO26 5FA: not on the flood risk listYO26 5FD: not on the flood risk listYO26 5FE: not on the flood risk listYO26 5HB: not on the flood risk listYO26 5HD: not on the flood risk listYO26 5HG: not on the flood risk listYO26 5HH: not on the flood risk listYO26 5HJ: not on the flood risk listYO26 5HN: not on the flood risk listYO26 5HP: not on the flood risk listYO26 5HR: not on the flood risk listYO26 5HT: not on the flood risk listYO26 5JD: not on the flood risk listYO26 5JG: not on the flood risk listYO26 5JP: not on the flood risk listYO26 5JT: not on the flood risk listYO26 5LA: not on the flood risk listYO26 5LD: not on the flood risk listYO26 5LE: not on the flood risk listYO26 5LF: not on the flood risk listYO26 5LJ: not on the flood risk listYO26 5LN: not on the flood risk listYO26 5LP: not on the flood risk listYO26 5LS: not on the flood risk listYO26 5LZ: not on the flood risk listYO26 5NA: not on the flood risk listYO26 5NB: not on the flood risk listYO26 5NF: not on the flood risk listYO26 5NG: not on the flood risk listYO26 5NH: not on the flood risk listYO26 5NL: not on the flood risk listYO26 5NR: not on the flood risk listYO26 5NU: not on the flood risk listYO26 5NW: not on the flood risk listYO26 5PD: not on the flood risk listYO26 5PE: not on the flood risk listYO26 5PG: not on the flood risk listYO26 5PN: not on the flood risk listYO26 5PP: not on the flood risk listYO26 5PU: not on the flood risk listYO26 5QA: not on the flood risk listYO26 5QB: not on the flood risk listYO26 5QH: not on the flood risk listYO26 5QL: not on the flood risk listYO26 5QN: not on the flood risk listYO26 5QP: not on the flood risk listYO26 5QS: not on the flood risk listYO26 5QT: not on the flood risk listYO26 5QU: not on the flood risk listYO26 5QX: not on the flood risk listYO26 5QZ: not on the flood risk listYO26 5RE: not on the flood risk listYO26 5RF: not on the flood risk listYO26 5RJ: not on the flood risk listYO26 5RL: not on the flood risk listYO26 5RN: not on the flood risk listYO26 5RR: not on the flood risk listYO26 5RT: not on the flood risk listYO26 5RU: not on the flood risk listYO26 5SB: not on the flood risk listYO26 5SD: not on the flood risk listYO26 5SG: not on the flood risk listYO26 5SJ: not on the flood risk listYO26 5SL: not on the flood risk listYO26 5ST: not on the flood risk listYO26 5SX: not on the flood risk listYO26 5TW: not on the flood risk listYO26 6AA: not on the flood risk listYO26 6AD: not on the flood risk listYO26 6AG: not on the flood risk listYO26 6AH: not on the flood risk listYO26 6AJ: not on the flood risk listYO26 6AP: not on the flood risk listYO26 6AT: not on the flood risk listYO26 6AX: not on the flood risk listYO26 6AZ: not on the flood risk listYO26 6BA: not on the flood risk listYO26 6BD: not on the flood risk listYO26 6BE: not on the flood risk listYO26 6BF: not on the flood risk listYO26 6BG: not on the flood risk listYO26 6BJ: not on the flood risk listYO26 6BN: not on the flood risk listYO26 6DA: not on the flood risk listYO26 6DE: not on the flood risk listYO26 6DF: not on the flood risk listYO26 6DH: not on the flood risk listYO26 6DP: not on the flood risk listYO26 6DS: not on the flood risk listYO26 6DW: not on the flood risk listYO26 6DY: not on the flood risk listYO26 6DZ: not on the flood risk listYO26 6EF: not on the flood risk listYO26 6EH: not on the flood risk listYO26 6GA: not on the flood risk listYO26 6GQ: not on the flood risk listYO26 6GZ: not on the flood risk listYO26 6HA: not on the flood risk listYO26 6HB: not on the flood risk listYO26 6HD: not on the flood risk listYO26 6HE: not on the flood risk listYO26 6HH: not on the flood risk listYO26 6HJ: not on the flood risk listYO26 6HL: not on the flood risk listYO26 6HN: not on the flood risk listYO26 6HR: not on the flood risk listYO26 6HT: not on the flood risk listYO26 6HU: not on the flood risk listYO26 6HX: not on the flood risk listYO26 6JD: not on the flood risk listYO26 6JH: not on the flood risk listYO26 6JJ: not on the flood risk listYO26 6JP: not on the flood risk listYO26 6JU: not on the flood risk listYO26 6LB: not on the flood risk listYO26 6LD: not on the flood risk listYO26 6LR: not on the flood risk listYO26 6LU: not on the flood risk listYO26 6LW: not on the flood risk listYO26 6LY: not on the flood risk listYO26 6LZ: not on the flood risk listYO26 6NB: not on the flood risk listYO26 6NE: not on the flood risk listYO26 6NG: not on the flood risk listYO26 6NL: not on the flood risk listYO26 6NN: not on the flood risk listYO26 6NP: not on the flood risk listYO26 6NX: not on the flood risk listYO26 6NZ: not on the flood risk listYO26 6PA: not on the flood risk listYO26 6PD: not on the flood risk listYO26 6PH: not on the flood risk listYO26 6PN: not on the flood risk listYO26 6PP: not on the flood risk listYO26 6PR: not on the flood risk listYO26 6PS: not on the flood risk listYO26 6PU: not on the flood risk listYO26 6PW: not on the flood risk listYO26 6PX: not on the flood risk listYO26 6PY: not on the flood risk listYO26 6PZ: not on the flood risk listYO26 6QA: not on the flood risk listYO26 6QB: not on the flood risk listYO26 6QD: not on the flood risk listYO26 6QE: not on the flood risk listYO26 6QF: not on the flood risk listYO26 6QG: not on the flood risk listYO26 6QL: not on the flood risk listYO26 6QN: not on the flood risk listYO26 6QR: not on the flood risk listYO26 6QS: not on the flood risk listYO26 6QT: not on the flood risk listYO26 6QW: not on the flood risk listYO26 6QX: not on the flood risk listYO26 6QZ: not on the flood risk listYO26 6RD: not on the flood risk listYO26 6RE: not on the flood risk listYO26 6RF: not on the flood risk listYO26 6RG: not on the flood risk listYO26 6RQ: not on the flood risk listYO26 6RR: not on the flood risk listYO26 6RU: not on the flood risk listYO26 6RX: not on the flood risk listYO26 6SA: not on the flood risk listYO26 6SD: not on the flood risk listYO26 7AB: not on the flood risk listYO26 7AD: not on the flood risk listYO26 7AE: not on the flood risk listYO26 7AF: not on the flood risk listYO26 7AG: not on the flood risk listYO26 7AH: not on the flood risk listYO26 7AJ: not on the flood risk listYO26 7AN: not on the flood risk listYO26 7DW: not on the flood risk listYO26 7LF: not on the flood risk listYO26 7LG: not on the flood risk listYO26 7LH: not on the flood risk listYO26 7LJ: not on the flood risk listYO26 7LL: not on the flood risk listYO26 7LN: not on the flood risk listYO26 7LP: not on the flood risk listYO26 7LT: not on the flood risk listYO26 7LW: not on the flood risk listYO26 7LY: not on the flood risk listYO26 7LZ: not on the flood risk listYO26 7NA: not on the flood risk listYO26 7ND: not on the flood risk listYO26 7NG: not on the flood risk listYO26 7NH: not on the flood risk listYO26 7NJ: not on the flood risk listYO26 7NL: not on the flood risk listYO26 7NN: not on the flood risk listYO26 7NP: not on the flood risk listYO26 7NQ: not on the flood risk listYO26 7NR: not on the flood risk listYO26 7NS: not on the flood risk listYO26 7NT: not on the flood risk listYO26 7NU: not on the flood risk listYO26 7NW: not on the flood risk listYO26 7NX: not on the flood risk listYO26 7NY: not on the flood risk listYO26 7NZ: not on the flood risk listYO26 7PA: not on the flood risk listYO26 7PE: not on the flood risk listYO26 7PH: not on the flood risk listYO26 7PJ: not on the flood risk listYO26 7PN: not on the flood risk listYO26 7PP: not on the flood risk listYO26 7PQ: not on the flood risk listYO26 7PT: not on the flood risk listYO26 7PU: not on the flood risk listYO26 7PX: not on the flood risk listYO26 7PY: not on the flood risk listYO26 7PZ: not on the flood risk listYO26 7QA: not on the flood risk listYO26 7QF: not on the flood risk listYO26 7QG: not on the flood risk listYO26 7QP: not on the flood risk listYO26 7QQ: not on the flood risk listYO26 7QS: not on the flood risk listYO26 7QU: not on the flood risk listYO26 7QW: not on the flood risk listYO26 7RA: not on the flood risk listYO26 7RD: not on the flood risk listYO26 7RG: not on the flood risk listYO26 7RH: not on the flood risk listYO26 7RP: not on the flood risk listYO26 7RQ: not on the flood risk listYO26 7SD: not on the flood risk listYO26 8AA: not on the flood risk listYO26 8AE: not on the flood risk listYO26 8AF: not on the flood risk listYO26 8AG: not on the flood risk listYO26 8AH: not on the flood risk listYO26 8AJ: not on the flood risk listYO26 8AL: not on the flood risk listYO26 8AN: not on the flood risk listYO26 8AP: not on the flood risk listYO26 8AR: not on the flood risk listYO26 8AT: not on the flood risk listYO26 8AU: not on the flood risk listYO26 8AX: not on the flood risk listYO26 8AY: not on the flood risk listYO26 8AZ: not on the flood risk listYO26 8BA: not on the flood risk listYO26 8BB: not on the flood risk listYO26 8BD: not on the flood risk listYO26 8BE: not on the flood risk listYO26 8BG: not on the flood risk listYO26 8BH: not on the flood risk listYO26 8BJ: not on the flood risk listYO26 8BL: not on the flood risk listYO26 8BN: not on the flood risk listYO26 8BP: not on the flood risk listYO26 8BQ: not on the flood risk listYO26 8BS: not on the flood risk listYO26 8BT: not on the flood risk listYO26 8BX: not on the flood risk listYO26 8BY: not on the flood risk listYO26 8BZ: not on the flood risk listYO26 8DE: not on the flood risk listYO26 8DF: not on the flood risk listYO26 8DG: not on the flood risk listYO26 8DJ: not on the flood risk listYO26 8DL: not on the flood risk listYO26 8DN: not on the flood risk listYO26 8DP: not on the flood risk listYO26 8DQ: not on the flood risk listYO26 8DS: not on the flood risk listYO26 8DU: not on the flood risk listYO26 8DW: not on the flood risk listYO26 8DX: not on the flood risk listYO26 8ED: not on the flood risk listYO26 8EE: not on the flood risk listYO26 8EF: not on the flood risk listYO26 8EG: not on the flood risk listYO26 8EH: not on the flood risk listYO26 8EL: not on the flood risk listYO26 8EP: not on the flood risk listYO26 8EQ: not on the flood risk listYO26 8ER: not on the flood risk listYO26 8EU: not on the flood risk listYO26 8EW: not on the flood risk listYO26 8EY: not on the flood risk listYO26 8FA: not on the flood risk listYO26 8FB: not on the flood risk listYO26 8FD: not on the flood risk listYO26 8FE: not on the flood risk listYO26 8FG: not on the flood risk listYO26 8FH: not on the flood risk listYO26 8FL: not on the flood risk listYO26 8FN: not on the flood risk listYO26 8FP: not on the flood risk listYO26 8FQ: not on the flood risk listYO26 8FR: not on the flood risk listYO26 8FS: not on the flood risk listYO26 8HE: not on the flood risk listYO26 8HZ: not on the flood risk listYO26 8JA: not on the flood risk listYO26 8JB: not on the flood risk listYO26 8JD: not on the flood risk listYO26 8JE: not on the flood risk listYO26 8JF: not on the flood risk listYO26 8JG: not on the flood risk listYO26 8JR: not on the flood risk listYO26 8JS: not on the flood risk listYO26 8JT: not on the flood risk listYO26 8JX: not on the flood risk listYO26 8JZ: not on the flood risk listYO26 8LB: not on the flood risk listYO26 8LD: not on the flood risk listYO26 8LE: not on the flood risk listYO26 8LF: not on the flood risk listYO26 8LG: not on the flood risk listYO26 9AA: not on the flood risk listYO26 9AB: not on the flood risk listYO26 9AD: not on the flood risk listYO26 9AE: not on the flood risk listYO26 9AF: not on the flood risk listYO26 9AG: not on the flood risk listYO26 9AJ: not on the flood risk listYO26 9RE: not on the flood risk listYO26 9RF: not on the flood risk listYO26 9RG: not on the flood risk listYO26 9RJ: not on the flood risk listYO26 9RL: not on the flood risk listYO26 9RN: not on the flood risk listYO26 9RP: not on the flood risk listYO26 9RT: not on the flood risk listYO26 9RU: not on the flood risk listYO26 9SD: not on the flood risk listYO26 9SF: not on the flood risk listYO26 9SG: not on the flood risk listYO26 9SH: not on the flood risk listYO26 9SL: not on the flood risk listYO26 9SN: not on the flood risk listYO26 9SP: not on the flood risk listYO26 9SQ: not on the flood risk listYO26 9SS: not on the flood risk listYO26 9SW: not on the flood risk listYO26 9SY: not on the flood risk listYO26 9TA: not on the flood risk listYO26 9TB: not on the flood risk listYO26 9TD: not on the flood risk listYO26 9TE: not on the flood risk listYO26 9TH: not on the flood risk listYO26 9TL: not on the flood risk listYO26 9TN: not on the flood risk listYO26 9TP: not on the flood risk listYO26 9TQ: not on the flood risk listYO26 9TR: not on the flood risk listYO26 9TT: not on the flood risk listYO26 9TU: not on the flood risk listYO26 9TW: not on the flood risk listYO26 6AF: very low flood risk onlyYO26 8HA: very low flood risk onlyYO26 8JH: very low flood risk onlyYO26 8JJ: very low flood risk onlyYO26 8LA: very low flood risk onlyYO26 9RX: very low flood risk onlyYO26 4GB: low flood risk at worstYO26 4QN: low flood risk at worstYO26 4QP: low flood risk at worstYO26 4UD: low flood risk at worstYO26 4TN: low flood risk at worstYO26 4UA: low flood risk at worstYO26 4UT: low flood risk at worstYO26 4UU: low flood risk at worstYO26 4UX: low flood risk at worstYO26 4XH: low flood risk at worstYO26 4XD: low flood risk at worstYO26 4XP: low flood risk at worstYO26 4XT: low flood risk at worstYO26 4YN: low flood risk at worstYO26 4YT: low flood risk at worstYO26 4YU: low flood risk at worstYO26 5RX: low flood risk at worstYO26 6BL: low flood risk at worstYO26 6DL: low flood risk at worstYO26 6JX: low flood risk at worstYO26 6RA: low flood risk at worstYO26 6RB: low flood risk at worstYO26 6RS: low flood risk at worstYO26 6RW: low flood risk at worstYO26 7PB: low flood risk at worstYO26 7RF: low flood risk at worstYO26 8BU: low flood risk at worstYO26 8DA: low flood risk at worstYO26 8DD: low flood risk at worstYO26 8ET: low flood risk at worstYO26 8HN: low flood risk at worstYO26 8JP: low flood risk at worstYO26 8JW: low flood risk at worstYO26 4ZF: medium flood risk at worstYO26 4XY: medium flood risk at worstYO26 7QH: medium flood risk at worstYO26 8AW: medium flood risk at worstYO26 8EJ: medium flood risk at worstYO26 8ES: medium flood risk at worstYO26 8JL: medium flood risk at worstYO26 8JQ: medium flood risk at worstYO26 4RH: high flood riskYO26 4XQ: high flood riskYO26 4YS: high flood riskYO26 5FB: high flood riskYO26 6HS: high flood riskYO26 6LL: high flood riskYO26 6LP: high flood riskYO26 7PL: high flood riskYO26 7PR: high flood riskYO26 7QD: high flood riskYO26 7QE: high flood riskYO26 7QJ: high flood riskYO26 7QL: high flood riskYO26 7QN: high flood riskYO26 7QR: high flood riskYO26 7RJ: high flood riskYO26 8DB: high flood riskYO26 8DH: high flood riskYO26 8DT: high flood riskYO26 8DY: high flood riskYO26 8EA: high flood riskYO26 8EB: high flood riskYO26 8EN: high flood riskYO26 8EX: high flood riskYO26 8EZ: high flood riskYO26 8HB: high flood riskYO26 8JN: high flood riskYO26 8JU: high flood riskYO26 9RD: high flood riskYO26 9RY: high flood riskYO26 9RZ: high flood riskYO26 9SA: high flood riskYO26 9SB: high flood riskYO26 9SJ: high flood riskYO26 9ST: high flood riskYO26 9SU: high flood riskYO26 9TG: high flood risk YorkUpper Poppleton Map of every postcode in YO26, by flood risk Of the 885 postcodes in YO26 that ONS places, 38 have a home or business at high risk, 10 are at medium risk at worst, 62 are at low risk at worst, 7 are at very low risk only and 768 are not on the Environment Agency's at-risk list. Places named: York, Upper Poppleton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. A19 YorkUpper Poppleton
  • A home or business at high risk: 38
  • At medium risk at worst: 10
  • At low risk at worst: 62
  • At very low risk only: 7
  • Not on the at-risk list: 768

Of the 885 postcodes in YO26 that ONS places, 38 have a home or business at high risk, 10 are at medium risk at worst, 62 are at low risk at worst, 7 are at very low risk only and 768 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

The middle of its postcodes: latitude 53.9761, longitude -1.1807. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

38 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

What broadband can you get in YO26?

Ofcom reports on 864 of the 885 postcodes in YO26. At 684 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit684 of 864
Postcodes where every home can get superfast773 of 864

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is YO26 at risk of flooding?

117 of the 885 postcodes in YO26 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 380 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 117 of 885 postcodes High: 204Medium: 176Low: 1,087Very low: 58

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in YO26?

Homes in YO26 sold for a typical £305,000 in the 12 months to August 2026, across 361 sales, down 6.7% on the 12 months before, HM Land Registry's figures show.

£305,000 typical price, the 12 months to August 2026
12 months to August 2025
£326,796
12 months to August 2026
£305,000

▼ down 6.7% on the 12 months before

Detached£484,495 101 sales
Semi-detached£301,998 136 sales
Terraced£248,000 101 sales
Flat or maisonette£167,500 23 sales

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Places in YO26

Towns and villages with postcodes in YO26, and how many each has here.

Who covers YO26

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • York Central420
  • Wetherby and Easingwold274
  • York Outer191

Police force areas

  • North Yorkshire885

Next to YO26

"Next to" is by number: the districts before and after YO26 in the YO area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.