LN9 postcode district: Horncastle and around, Lincolnshire

LN9 is a postcode district in Lincolnshire, with 402 postcodes in use in 3 sectors. It has postcodes in Horncastle. Its council is East Lindsey.

Postcodes in use
402
Sectors
3

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

Every postcode in LN9, and which are new since 2020

Map of every postcode in LN9, by new since 2020 Of the 402 postcodes in LN9 that ONS places, 25 are new since 2020 and 377 were in use before 2020. Places named: Horncastle. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. LN9 5AG: before 2020LN9 5AH: before 2020LN9 5AJ: before 2020LN9 5AP: before 2020LN9 5AS: before 2020LN9 5AT: before 2020LN9 5AU: before 2020LN9 5AW: before 2020LN9 5AZ: before 2020LN9 5BA: before 2020LN9 5BB: before 2020LN9 5BD: before 2020LN9 5BE: before 2020LN9 5BF: before 2020LN9 5BH: before 2020LN9 5BQ: before 2020LN9 5BW: before 2020LN9 5DA: before 2020LN9 5DJ: before 2020LN9 5DL: before 2020LN9 5DQ: before 2020LN9 5DR: before 2020LN9 5ED: before 2020LN9 5EH: before 2020LN9 5EJ: before 2020LN9 5EN: before 2020LN9 5EP: before 2020LN9 5ES: before 2020LN9 5ET: before 2020LN9 5EU: before 2020LN9 5EX: before 2020LN9 5EZ: before 2020LN9 5FA: before 2020LN9 5FE: before 2020LN9 5GB: before 2020LN9 5GD: before 2020LN9 5GE: before 2020LN9 5GF: before 2020LN9 5HA: before 2020LN9 5HF: before 2020LN9 5JB: before 2020LN9 5JE: before 2020LN9 5JL: before 2020LN9 5JP: before 2020LN9 5JR: before 2020LN9 5JS: before 2020LN9 5JT: before 2020LN9 5JU: before 2020LN9 5JX: before 2020LN9 5JY: before 2020LN9 5JZ: before 2020LN9 5LA: before 2020LN9 5LB: before 2020LN9 5LL: before 2020LN9 5LN: before 2020LN9 5LP: before 2020LN9 5LU: before 2020LN9 5LX: before 2020LN9 5LY: before 2020LN9 5LZ: before 2020LN9 5NA: before 2020LN9 5NB: before 2020LN9 5ND: before 2020LN9 5NE: before 2020LN9 5NF: before 2020LN9 5NG: before 2020LN9 5NH: before 2020LN9 5NJ: before 2020LN9 5NL: before 2020LN9 5NN: before 2020LN9 5NP: before 2020LN9 5NR: before 2020LN9 5NS: before 2020LN9 5NT: before 2020LN9 5NU: before 2020LN9 5NW: before 2020LN9 5NX: before 2020LN9 5PA: before 2020LN9 5PB: before 2020LN9 5PE: before 2020LN9 5PG: before 2020LN9 5PH: before 2020LN9 5PJ: before 2020LN9 5PN: before 2020LN9 5PP: before 2020LN9 5PR: before 2020LN9 5PS: before 2020LN9 5PT: before 2020LN9 5PU: before 2020LN9 5PW: before 2020LN9 5PX: before 2020LN9 5PY: before 2020LN9 5PZ: before 2020LN9 5QA: before 2020LN9 5QB: before 2020LN9 5QD: before 2020LN9 5QE: before 2020LN9 5QF: before 2020LN9 5QG: before 2020LN9 5QH: before 2020LN9 5QJ: before 2020LN9 5QL: before 2020LN9 5QN: before 2020LN9 5QP: before 2020LN9 5QQ: before 2020LN9 5QW: before 2020LN9 5RA: before 2020LN9 5RB: before 2020LN9 5RD: before 2020LN9 5RE: before 2020LN9 5RG: before 2020LN9 5RH: before 2020LN9 5RJ: before 2020LN9 5RL: before 2020LN9 5RN: before 2020LN9 5RP: before 2020LN9 5RQ: before 2020LN9 5RR: before 2020LN9 5RS: before 2020LN9 5RT: before 2020LN9 5RU: before 2020LN9 5RW: before 2020LN9 5RX: before 2020LN9 5RY: before 2020LN9 5RZ: before 2020LN9 5SA: before 2020LN9 5SB: before 2020LN9 5SR: before 2020LN9 6AA: before 2020LN9 6AB: before 2020LN9 6AE: before 2020LN9 6AF: before 2020LN9 6AJ: before 2020LN9 6AL: before 2020LN9 6AN: before 2020LN9 6AQ: before 2020LN9 6AR: before 2020LN9 6AS: before 2020LN9 6AT: before 2020LN9 6AU: before 2020LN9 6AW: before 2020LN9 6BE: before 2020LN9 6BF: before 2020LN9 6BJ: before 2020LN9 6BL: before 2020LN9 6BN: before 2020LN9 6BY: before 2020LN9 6DA: before 2020LN9 6DD: before 2020LN9 6DF: before 2020LN9 6DH: before 2020LN9 6DZ: before 2020LN9 6EA: before 2020LN9 6EF: before 2020LN9 6EG: before 2020LN9 6EJ: before 2020LN9 6EL: before 2020LN9 6EN: before 2020LN9 6EP: before 2020LN9 6EQ: before 2020LN9 6ER: before 2020LN9 6EY: before 2020LN9 6FA: before 2020LN9 6HP: before 2020LN9 6HU: before 2020LN9 6HZ: before 2020LN9 6JA: before 2020LN9 6JB: before 2020LN9 6JD: before 2020LN9 6JE: before 2020LN9 6JF: before 2020LN9 6JG: before 2020LN9 6JH: before 2020LN9 6JJ: before 2020LN9 6JL: before 2020LN9 6JP: before 2020LN9 6JQ: before 2020LN9 6JS: before 2020LN9 6JT: before 2020LN9 6JU: before 2020LN9 6JX: before 2020LN9 6JY: before 2020LN9 6JZ: before 2020LN9 6LA: before 2020LN9 6LB: before 2020LN9 6LD: before 2020LN9 6LE: before 2020LN9 6LF: before 2020LN9 6LG: before 2020LN9 6LH: before 2020LN9 6LJ: before 2020LN9 6LL: before 2020LN9 6LN: before 2020LN9 6LP: before 2020LN9 6LR: before 2020LN9 6LS: before 2020LN9 6LT: before 2020LN9 6LU: before 2020LN9 6NE: before 2020LN9 6NG: before 2020LN9 6NJ: before 2020LN9 6NL: before 2020LN9 6NN: before 2020LN9 6NP: before 2020LN9 6NR: before 2020LN9 6NS: before 2020LN9 6NT: before 2020LN9 6NU: before 2020LN9 6NX: before 2020LN9 6PA: before 2020LN9 6PB: before 2020LN9 6PE: before 2020LN9 6PG: before 2020LN9 6PH: before 2020LN9 6PJ: before 2020LN9 6PQ: before 2020LN9 6PR: before 2020LN9 6PS: before 2020LN9 6PT: before 2020LN9 6PU: before 2020LN9 6PX: before 2020LN9 6PZ: before 2020LN9 6QB: before 2020LN9 6QD: before 2020LN9 6QE: before 2020LN9 6QF: before 2020LN9 6QG: before 2020LN9 6QL: before 2020LN9 6QN: before 2020LN9 6QP: before 2020LN9 6QR: before 2020LN9 6QS: before 2020LN9 6QT: before 2020LN9 6QU: before 2020LN9 6QW: before 2020LN9 6QX: before 2020LN9 6RD: before 2020LN9 6RE: before 2020LN9 6RH: before 2020LN9 6RQ: before 2020LN9 6RX: before 2020LN9 6SB: before 2020LN9 6SD: before 2020LN9 5AA: before 2020LN9 5AE: before 2020LN9 5AX: before 2020LN9 6AX: before 2020LN9 6PL: before 2020LN9 5BL: before 2020LN9 5DF: before 2020LN9 5DH: before 2020LN9 6AD: before 2020LN9 5FG: new since 2020LN9 5FH: new since 2020LN9 5FL: new since 2020LN9 5FN: new since 2020LN9 5FP: new since 2020LN9 5FS: new since 2020LN9 5PD: new since 2020LN9 6BT: new since 2020LN9 6BU: new since 2020LN9 6FF: new since 2020LN9 6FJ: new since 2020LN9 6FL: new since 2020LN9 6RP: new since 2020LN9 5FQ: new since 2020LN9 5UB: new since 2020LN9 9BF: new since 2020LN9 6RU: new since 2020 Horncastle Map of every postcode in LN9, by new since 2020 Of the 402 postcodes in LN9 that ONS places, 25 are new since 2020 and 377 were in use before 2020. Places named: Horncastle. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. Horncastle
  • New since 2020: 25
  • In use before 2020: 377

Of the 402 postcodes in LN9 that ONS places, 25 are new since 2020 and 377 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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 53.2173, longitude -0.1116. 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; when each came into use: the same directory; 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

What broadband can you get in LN9?

Ofcom reports on 395 of the 402 postcodes in LN9. At 194 of them every home and business can get gigabit broadband, and at 8 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit194 of 395
Postcodes where every home can get superfast297 of 395
Postcodes where some cannot get decent broadband8 of 395

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 LN9 at risk of flooding?

66 of the 402 postcodes in LN9 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 141 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 66 of 402 postcodes High: 31Medium: 110Low: 380Very low: 82

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 LN9?

Homes in LN9 sold for a typical £200,000 in the 12 months to August 2026, across 149 sales, down 12% on the 12 months before, HM Land Registry's figures show.

£200,000 typical price, the 12 months to August 2026
£227,248 12 months to August 2025
▼ down 12% on the 12 months before
  • Detached £260,000 77 sales
  • Semi-detached £184,750 32 sales
  • Terraced £152,500 36 sales
  • Flat or maisonette 4 sales, too few to price

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 LN9

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

UK postcode format explained

Places in LN9

Towns and villages with postcodes in LN9, and how many each has here.

Who covers LN9

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

  • Louth and Horncastle402

Police force areas

  • Lincolnshire402

Next to LN9

"Next to" is by number: the districts before and after LN9 in the LN area.

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