SG13 postcode district: Hertford and around

SG13 is a postcode district in Hertfordshire, with 532 postcodes in use in 3 sectors. It has postcodes in Hertford, Hertford Heath and Hoddesdon. It is split between 3 councils: East Hertfordshire (509 postcodes), Welwyn Hatfield (15) and Broxbourne (8).

Postcodes in use
532
Sectors
3
Councils
3 councils
Places
3 places

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

Every postcode in SG13, by flood risk

Map of every postcode in SG13, by flood risk Of the 532 postcodes in SG13 that ONS places, 39 have a home or business at high risk, 10 are at medium risk at worst, 15 are at low risk at worst and 468 are not on the Environment Agency's at-risk list. 3 groups of postcodes at high or medium risk are outlined: 18 postcodes at high or medium risk; 13 postcodes at high or medium risk; 7 postcodes at high or medium risk. Places named: Hertford, Hoddesdon, Hertford Heath. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A1170A10A414 SG13 7AA: not on the flood risk listSG13 7AD: not on the flood risk listSG13 7AF: not on the flood risk listSG13 7AJ: not on the flood risk listSG13 7AS: not on the flood risk listSG13 7AU: not on the flood risk listSG13 7BS: not on the flood risk listSG13 7BT: not on the flood risk listSG13 7BX: not on the flood risk listSG13 7DA: not on the flood risk listSG13 7DF: not on the flood risk listSG13 7DP: not on the flood risk listSG13 7DT: not on the flood risk listSG13 7EA: not on the flood risk listSG13 7EJ: not on the flood risk listSG13 7EL: not on the flood risk listSG13 7EN: not on the flood risk listSG13 7EQ: not on the flood risk listSG13 7ER: not on the flood risk listSG13 7EU: not on the flood risk listSG13 7EW: not on the flood risk listSG13 7EX: not on the flood risk listSG13 7FX: not on the flood risk listSG13 7GA: not on the flood risk listSG13 7GH: not on the flood risk listSG13 7GQ: not on the flood risk listSG13 7GX: not on the flood risk listSG13 7GY: not on the flood risk listSG13 7HA: not on the flood risk listSG13 7HB: not on the flood risk listSG13 7HG: not on the flood risk listSG13 7HN: not on the flood risk listSG13 7HQ: not on the flood risk listSG13 7HR: not on the flood risk listSG13 7HW: not on the flood risk listSG13 7HX: not on the flood risk listSG13 7HY: not on the flood risk listSG13 7HZ: not on the flood risk listSG13 7JB: not on the flood risk listSG13 7JD: not on the flood risk listSG13 7JE: not on the flood risk listSG13 7JF: not on the flood risk listSG13 7JJ: not on the flood risk listSG13 7JL: not on the flood risk listSG13 7JN: not on the flood risk listSG13 7JR: not on the flood risk listSG13 7JS: not on the flood risk listSG13 7JY: not on the flood risk listSG13 7LB: not on the flood risk listSG13 7LD: not on the flood risk listSG13 7LE: not on the flood risk listSG13 7LJ: not on the flood risk listSG13 7LL: not on the flood risk listSG13 7LN: not on the flood risk listSG13 7LQ: not on the flood risk listSG13 7LR: not on the flood risk listSG13 7LT: not on the flood risk listSG13 7LU: not on the flood risk listSG13 7LY: not on the flood risk listSG13 7LZ: not on the flood risk listSG13 7NL: not on the flood risk listSG13 7NN: not on the flood risk listSG13 7NP: not on the flood risk listSG13 7NS: not on the flood risk listSG13 7NT: not on the flood risk listSG13 7NU: not on the flood risk listSG13 7NW: not on the flood risk listSG13 7NX: not on the flood risk listSG13 7NY: not on the flood risk listSG13 7NZ: not on the flood risk listSG13 7PA: not on the flood risk listSG13 7PB: not on the flood risk listSG13 7PD: not on the flood risk listSG13 7PE: not on the flood risk listSG13 7PF: not on the flood risk listSG13 7PG: not on the flood risk listSG13 7PH: not on the flood risk listSG13 7PJ: not on the flood risk listSG13 7PL: not on the flood risk listSG13 7PN: not on the flood risk listSG13 7PP: not on the flood risk listSG13 7PQ: not on the flood risk listSG13 7PR: not on the flood risk listSG13 7PS: not on the flood risk listSG13 7PT: not on the flood risk listSG13 7PU: not on the flood risk listSG13 7PW: not on the flood risk listSG13 7PX: not on the flood risk listSG13 7PY: not on the flood risk listSG13 7PZ: not on the flood risk listSG13 7QA: not on the flood risk listSG13 7QE: not on the flood risk listSG13 7QG: not on the flood risk listSG13 7QJ: not on the flood risk listSG13 7QL: not on the flood risk listSG13 7QN: not on the flood risk listSG13 7QP: not on the flood risk listSG13 7QQ: not on the flood risk listSG13 7QR: not on the flood risk listSG13 7QS: not on the flood risk listSG13 7QT: not on the flood risk listSG13 7QU: not on the flood risk listSG13 7QW: not on the flood risk listSG13 7QX: not on the flood risk listSG13 7QZ: not on the flood risk listSG13 7RA: not on the flood risk listSG13 7RB: not on the flood risk listSG13 7RD: not on the flood risk listSG13 7RF: not on the flood risk listSG13 7RG: not on the flood risk listSG13 7RH: not on the flood risk listSG13 7RJ: not on the flood risk listSG13 7RL: not on the flood risk listSG13 7RN: not on the flood risk listSG13 7RR: not on the flood risk listSG13 7RS: not on the flood risk listSG13 7RT: not on the flood risk listSG13 7RU: not on the flood risk listSG13 7RX: not on the flood risk listSG13 7RY: not on the flood risk listSG13 7RZ: not on the flood risk listSG13 7SA: not on the flood risk listSG13 7SB: not on the flood risk listSG13 7SD: not on the flood risk listSG13 7SF: not on the flood risk listSG13 7SG: not on the flood risk listSG13 7SH: not on the flood risk listSG13 7SJ: not on the flood risk listSG13 7SL: not on the flood risk listSG13 7SN: not on the flood risk listSG13 7SP: not on the flood risk listSG13 7SQ: not on the flood risk listSG13 7SR: not on the flood risk listSG13 7SS: not on the flood risk listSG13 7ST: not on the flood risk listSG13 7SU: not on the flood risk listSG13 7SW: not on the flood risk listSG13 7SX: not on the flood risk listSG13 7SY: not on the flood risk listSG13 7SZ: not on the flood risk listSG13 7TA: not on the flood risk listSG13 7TB: not on the flood risk listSG13 7TD: not on the flood risk listSG13 7TE: not on the flood risk listSG13 7TF: not on the flood risk listSG13 7TG: not on the flood risk listSG13 7TL: not on the flood risk listSG13 7TN: not on the flood risk listSG13 7TQ: not on the flood risk listSG13 7TR: not on the flood risk listSG13 7TS: not on the flood risk listSG13 7TU: not on the flood risk listSG13 7TX: not on the flood risk listSG13 7TZ: not on the flood risk listSG13 7UA: not on the flood risk listSG13 7UP: not on the flood risk listSG13 7UR: not on the flood risk listSG13 7US: not on the flood risk listSG13 7UT: not on the flood risk listSG13 7UU: not on the flood risk listSG13 7UX: not on the flood risk listSG13 7UY: not on the flood risk listSG13 7WN: not on the flood risk listSG13 7WS: not on the flood risk listSG13 7WU: not on the flood risk listSG13 7WX: not on the flood risk listSG13 7WY: not on the flood risk listSG13 7WZ: not on the flood risk listSG13 8AA: not on the flood risk listSG13 8AD: not on the flood risk listSG13 8AE: not on the flood risk listSG13 8AG: not on the flood risk listSG13 8AH: not on the flood risk listSG13 8AJ: not on the flood risk listSG13 8AL: not on the flood risk listSG13 8AN: not on the flood risk listSG13 8AQ: not on the flood risk listSG13 8AS: not on the flood risk listSG13 8AT: not on the flood risk listSG13 8AU: not on the flood risk listSG13 8AW: not on the flood risk listSG13 8AY: not on the flood risk listSG13 8AZ: not on the flood risk listSG13 8BA: not on the flood risk listSG13 8BB: not on the flood risk listSG13 8BD: not on the flood risk listSG13 8BE: not on the flood risk listSG13 8BG: not on the flood risk listSG13 8BH: not on the flood risk listSG13 8BJ: not on the flood risk listSG13 8BP: not on the flood risk listSG13 8BQ: not on the flood risk listSG13 8BS: not on the flood risk listSG13 8BT: not on the flood risk listSG13 8BW: not on the flood risk listSG13 8BX: not on the flood risk listSG13 8BZ: not on the flood risk listSG13 8DA: not on the flood risk listSG13 8DB: not on the flood risk listSG13 8DE: not on the flood risk listSG13 8DG: not on the flood risk listSG13 8DR: not on the flood risk listSG13 8DU: not on the flood risk listSG13 8EA: not on the flood risk listSG13 8EG: not on the flood risk listSG13 8EH: not on the flood risk listSG13 8EN: not on the flood risk listSG13 8EQ: not on the flood risk listSG13 8ER: not on the flood risk listSG13 8EX: not on the flood risk listSG13 8FB: not on the flood risk listSG13 8FD: not on the flood risk listSG13 8FE: not on the flood risk listSG13 8FF: not on the flood risk listSG13 8FG: not on the flood risk listSG13 8FH: not on the flood risk listSG13 8FJ: not on the flood risk listSG13 8FL: not on the flood risk listSG13 8FN: not on the flood risk listSG13 8FP: not on the flood risk listSG13 8FT: not on the flood risk listSG13 8FU: not on the flood risk listSG13 8FW: not on the flood risk listSG13 8FX: not on the flood risk listSG13 8FY: not on the flood risk listSG13 8GA: not on the flood risk listSG13 8GL: not on the flood risk listSG13 8HB: not on the flood risk listSG13 8HD: not on the flood risk listSG13 8HE: not on the flood risk listSG13 8HF: not on the flood risk listSG13 8HG: not on the flood risk listSG13 8HH: not on the flood risk listSG13 8HL: not on the flood risk listSG13 8HP: not on the flood risk listSG13 8HR: not on the flood risk listSG13 8HS: not on the flood risk listSG13 8HT: not on the flood risk listSG13 8HW: not on the flood risk listSG13 8HX: not on the flood risk listSG13 8HZ: not on the flood risk listSG13 8JA: not on the flood risk listSG13 8JD: not on the flood risk listSG13 8JG: not on the flood risk listSG13 8JH: not on the flood risk listSG13 8JJ: not on the flood risk listSG13 8JL: not on the flood risk listSG13 8JN: not on the flood risk listSG13 8JP: not on the flood risk listSG13 8JQ: not on the flood risk listSG13 8JR: not on the flood risk listSG13 8JS: not on the flood risk listSG13 8JU: not on the flood risk listSG13 8JX: not on the flood risk listSG13 8JY: not on the flood risk listSG13 8LA: not on the flood risk listSG13 8LB: not on the flood risk listSG13 8LD: not on the flood risk listSG13 8LF: not on the flood risk listSG13 8LG: not on the flood risk listSG13 8LH: not on the flood risk listSG13 8LJ: not on the flood risk listSG13 8LL: not on the flood risk listSG13 8LN: not on the flood risk listSG13 8LP: not on the flood risk listSG13 8LQ: not on the flood risk listSG13 8LR: not on the flood risk listSG13 8LS: not on the flood risk listSG13 8LT: not on the flood risk listSG13 8LU: not on the flood risk listSG13 8LW: not on the flood risk listSG13 8LX: not on the flood risk listSG13 8LY: not on the flood risk listSG13 8LZ: not on the flood risk listSG13 8NA: not on the flood risk listSG13 8NB: not on the flood risk listSG13 8ND: not on the flood risk listSG13 8NE: not on the flood risk listSG13 8NG: not on the flood risk listSG13 8NH: not on the flood risk listSG13 8NL: not on the flood risk listSG13 8NP: not on the flood risk listSG13 8NQ: not on the flood risk listSG13 8NR: not on the flood risk listSG13 8NS: not on the flood risk listSG13 8NT: not on the flood risk listSG13 8NU: not on the flood risk listSG13 8NX: not on the flood risk listSG13 8NY: not on the flood risk listSG13 8NZ: not on the flood risk listSG13 8PA: not on the flood risk listSG13 8PB: not on the flood risk listSG13 8PD: not on the flood risk listSG13 8PF: not on the flood risk listSG13 8PG: not on the flood risk listSG13 8PJ: not on the flood risk listSG13 8PL: not on the flood risk listSG13 8PN: not on the flood risk listSG13 8PP: not on the flood risk listSG13 8PQ: not on the flood risk listSG13 8PR: not on the flood risk listSG13 8PS: not on the flood risk listSG13 8PT: not on the flood risk listSG13 8PU: not on the flood risk listSG13 8PW: not on the flood risk listSG13 8PX: not on the flood risk listSG13 8PY: not on the flood risk listSG13 8PZ: not on the flood risk listSG13 8QA: not on the flood risk listSG13 8QB: not on the flood risk listSG13 8QE: not on the flood risk listSG13 8QG: not on the flood risk listSG13 8QH: not on the flood risk listSG13 8QJ: not on the flood risk listSG13 8QL: not on the flood risk listSG13 8QN: not on the flood risk listSG13 8QP: not on the flood risk listSG13 8QQ: not on the flood risk listSG13 8QS: not on the flood risk listSG13 8QT: not on the flood risk listSG13 8QU: not on the flood risk listSG13 8QW: not on the flood risk listSG13 8QX: not on the flood risk listSG13 8RA: not on the flood risk listSG13 8RB: not on the flood risk listSG13 8RD: not on the flood risk listSG13 8RE: not on the flood risk listSG13 8RG: not on the flood risk listSG13 8RH: not on the flood risk listSG13 8RJ: not on the flood risk listSG13 8RP: not on the flood risk listSG13 8SL: not on the flood risk listSG13 8SP: not on the flood risk listSG13 8UJ: not on the flood risk listSG13 8WA: not on the flood risk listSG13 7AG: low flood risk at worstSG13 7AP: low flood risk at worstSG13 7AW: low flood risk at worstSG13 7BB: low flood risk at worstSG13 7BN: low flood risk at worstSG13 7EG: low flood risk at worstSG13 7HL: low flood risk at worstSG13 7JG: low flood risk at worstSG13 7JH: low flood risk at worstSG13 7JQ: low flood risk at worstSG13 7UB: low flood risk at worstSG13 8DS: low flood risk at worstSG13 8DT: low flood risk at worstSG13 7AL: medium flood risk at worstSG13 7AX: medium flood risk at worstSG13 7AY: medium flood risk at worstSG13 7BH: medium flood risk at worstSG13 7BJ: medium flood risk at worstSG13 7DZ: medium flood risk at worstSG13 7AB: high flood riskSG13 7AE: high flood riskSG13 7AH: high flood riskSG13 7AT: high flood riskSG13 7BA: high flood riskSG13 7BE: high flood riskSG13 7BF: high flood riskSG13 7BP: high flood riskSG13 7BW: high flood riskSG13 7DE: high flood riskSG13 7JU: high flood riskSG13 7DD: high flood riskSG13 7DN: high flood riskSG13 7DR: high flood riskSG13 7DS: high flood riskSG13 7DY: high flood riskSG13 7EB: high flood riskSG13 7EE: high flood riskSG13 7GD: high flood riskSG13 7HE: high flood riskSG13 7HF: high flood riskSG13 7HJ: high flood riskSG13 8AF: high flood riskSG13 8BY: high flood riskSG13 8ES: high flood riskSG13 8EY: high flood riskSG13 8EZ: high flood riskSG13 8HJ: high flood riskSG13 8HU: high flood riskSG13 8HY: high flood riskSG13 8LE: high flood riskSG13 8QR: high flood riskSG13 8XX: high flood risk HertfordHoddesdonHertford Heath 18 postcodes at high or medium risk, outlined: this goes to SG13 7DD, the one with most homes and businesses at high risk18 postcodes at high or medium risk13 postcodes at high or medium risk, outlined: this goes to SG13 7BW, the one with most homes and businesses at high risk13 postcodes at high or medium risk7 postcodes at high or medium risk, outlined: this goes to SG13 7GD, the one with most homes and businesses at high risk7 postcodes at high or medium risk Map of every postcode in SG13, by flood risk Of the 532 postcodes in SG13 that ONS places, 39 have a home or business at high risk, 10 are at medium risk at worst, 15 are at low risk at worst and 468 are not on the Environment Agency's at-risk list. 3 groups of postcodes at high or medium risk are outlined: 18 postcodes at high or medium risk; 13 postcodes at high or medium risk; 7 postcodes at high or medium risk. Places named: Hertford, Hoddesdon, Hertford Heath. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A1170A414 HertfordHoddesdonHertford Heath
  • A home or business at high risk: 39
  • At medium risk at worst: 10
  • At low risk at worst: 15
  • At very low risk only: 0
  • Not on the at-risk list: 468
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 532 postcodes in SG13 that ONS places, 39 have a home or business at high risk, 10 are at medium risk at worst, 15 are at low risk at worst and 468 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. A dashed outline shows where 5 or more lie within 170 metres of each other. It is not a boundary, and 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 51.7876, longitude -0.0714. 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

39 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.

SG13 7GD35 at high riskSG13 7DD28 at high riskSG13 7BE21 at high riskSG13 7BW20 at high riskSG13 7BF17 at high riskSG13 7HF15 at high riskSG13 7JU15 at high riskSG13 7AB14 at high riskSG13 8HY12 at high riskSG13 7HE12 at high riskSG13 7HS10 at high riskSG13 7DN8 at high risk

Where the postcodes at high or medium risk lie together

  • 18 postcodes at high or medium risk, outlined on the map. SG13 7DD, is the one with most homes and businesses at high risk.
  • 13 postcodes at high or medium risk, outlined on the map. SG13 7BW, is the one with most homes and businesses at high risk.
  • 7 postcodes at high or medium risk, outlined on the map. SG13 7GD, is the one with most homes and businesses at high risk.

What broadband can you get in SG13?

Ofcom reports on 441 of the 532 postcodes in SG13. At 295 of them every home and business can get gigabit broadband, and at 1 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit295 of 441
Postcodes where every home can get superfast380 of 441
Postcodes where some cannot get decent broadband1 of 441

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 SG13 at risk of flooding?

64 of the 532 postcodes in SG13 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 490 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 64 of 532 postcodes High: 278Medium: 212Low: 233Very low: 2

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 SG13?

Homes in SG13 sold for a typical £425,400 in the 12 months to August 2026, across 205 sales, down 8% on the 12 months before, HM Land Registry's figures show.

£425,400 typical price, the 12 months to August 2026
£462,500 12 months to August 2025
▼ down 8% on the 12 months before
  • Detached £850,000 29 sales
  • Semi-detached £575,000 41 sales
  • Terraced £425,000 67 sales
  • Flat or maisonette £290,000 68 sales

Each bar is that kind's typical price, against the most expensive kind here.

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

Postcodes in SG13

Pick a sector, then a postcode. A sector is the district plus the next digit.

SG13 7251 postcodesSG13 8210 postcodesSG13 971 postcodes
UK postcode format explained

Places in SG13

Towns and villages with postcodes in SG13, and how many each has here.

Hertford postcodes,371Hertford Heath postcodes,56Hoddesdon postcodes,9

Who covers SG13

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

  • Hertford and Stortford379
  • Broxbourne93
  • North East Hertfordshire45
  • Hertsmere14
  • Welwyn Hatfield1

Police force areas

  • Hertfordshire532

Next to SG13

SG12 postcode district SG14 postcode district All SG districts Hertford postcodes

"Next to" is by number: the districts before and after SG13 in the SG area.

Check a postcode

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