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CO9

Postcode district

Postcode district covering Halstead and Sible Hedingham, in Braintree.

Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an CO9 postcode. How census figures are added up

Open in map

Radon Affected Area by postcode district

Worked out by Open Index · 2022

Under 1%90% or more

About 0% of people in CO9 live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£342,500
Joint 842nd most expensive of 2,235
Worked out by Open Index
Population
27,892
1,036th most populated of 2,756
ONS Census 2021 · 2021
People in radon Affected Area squares
0%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
83.4%
UK 87.8%
Ofcom · Jan 2026

How CO9 compares

Each dot is a postcode district. The black line marks the middle one.

CO9Middle
Median sale price16 postcode districts, CO · 2025
Median sale price: every postcode district in CO16 areas from £236,000 to £447,500. The middle area is £330,000. CO9 is £342,500.
£342,5007th most expensive
Population16 postcode districts, CO · 2021
Population: every postcode district in CO16 areas from 2,441 to 53,410. The middle area is 28,435. CO9 is 27,892.
27,8928th least populated
People in radon Affected Area squares16 postcode districts, CO · 2022
People in radon Affected Area squares: every postcode district in CO16 areas from 0.0% to 49.0%. The middle area is 0.0%. CO9 is 0.0%.
0%joint fewest people in radon Affected Areas
Gigabit broadband coverage16 postcode districts, CO · Jan 2026
Gigabit broadband coverage: every postcode district in CO16 areas from 49.7% to 93.3%. The middle area is 79.9%. CO9 is 83.4%.
83.4%7th highest

Is CO9 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in CO9 at a rate of 49.1 per 1,000 people.

That compares with 83.5 per 1,000 people across the CO postcode area.

In August 2026 alone, 157 cases of crime and anti-social behaviour were recorded in CO9.

In the 12 months to August 2026, the most common types were violence and sexual offences (635), other crime (288) and anti-social behaviour (129).

A year earlier, the recorded crime rate in CO9 was 53.7 per 1,000 people.

Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.

Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.

Deprivation in CO9, neighbourhood by neighbourhood

  • Deprivation is ranked by neighbourhood, so CO9 has no single figure. Of its 15 neighbourhoods with a rank:
  • Decile 2: 1 neighbourhood
  • Decile 4: 2 neighbourhoods
  • Decile 5: 5 neighbourhoods
  • Decile 6: 2 neighbourhoods
  • Decile 7: 1 neighbourhood
  • Decile 8: 2 neighbourhoods
  • Decile 9: 2 neighbourhoods

English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.

Neighbourhoods in CO9

NamePeople (census)Recorded crime per 1,000Deprivation decileGigabit broadband
Braintree 001C2,21728.8 per 1,000496.5%
Braintree 001D2,30348.0 per 1,000587.1%
Braintree 002A1,47035.4 per 1,000689.5%
Braintree 003A1,94425.3 per 1,000980.2%
Braintree 003B2,45847.9 per 1,000782.7%
Braintree 003C1,69239.5 per 1,000582.4%
Braintree 003D1,72531.3 per 1,000691.8%
Braintree 004A2,120109.2 per 1,000468.7%
Braintree 004B1,78092.2 per 1,000580.2%
Braintree 004C1,67660.2 per 1,000297.3%
Braintree 004D1,73546.4 per 1,000563.9%
Braintree 004E1,57466.6 per 1,000586.1%
Braintree 006A2,16540.3 per 1,000867.2%
Braintree 006B1,85931.6 per 1,000999.0%
Braintree 007F1,22551.7 per 1,000894.2%

MPs for CO9

As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

Middle areas in CO92

Postcode sectors in CO95

Council1

Towns in CO91

Postcode districts next to CO96

More in the CO postcode area2

CO9 in brief

CO9 is a postcode district covering Halstead and Sible Hedingham, in Braintree.

About 29,168 people lived in CO9 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £342,500 in 2025 across 402 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 49.1 per 1,000 people in the 12 months to August 2026 (police.uk).

The median price paid for a home in CO9 was £342,500 in 2025.

CO9 had 27,892 usual residents at the census.

About 0% of people in CO9 live in a 1 km square that the radon atlas marks as a radon Affected Area.

In CO9, 83.4% of homes and businesses could get gigabit-capable broadband in January 2026.