CB3 postcode district
CB3 holds 418 live postcodes around Girton, in Cambridge, South Cambridgeshire.
Towns and villages with their centre in CB3
| # | Place | County / council | Population |
|---|---|---|---|
| 1 | Girton | Cambridgeshire | 3,836 |
| 2 | Grantchester | Cambridgeshire | 540 |
Wards
| Name | Share of postcodes |
|---|---|
| Newnham | 36% |
| Castle | 35% |
| Girton | 23% |
| Harston & Comberton | 5% |
| West Chesterton | 0% |
| Market | 0% |
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| Cambridge | 72% |
| St Neots and Mid Cambridgeshire | 23% |
| South Cambridgeshire | 5% |
Deprivation
The middle postcode here sits in decile 10 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 0% of this district's postcodes sit in the most deprived three deciles, 93% in the least deprived three.
Deprivation deciles describe the LSOA neighbourhood each postcode sits in, weighted by postcodes rather than by people, because the postcode file carries no population. A district where the deprived neighbourhoods are densely populated will read better here than it would per resident.
Neighbouring districts in the CB area
CB1 · CB2 · CB4 · CB5 · CB6 · CB7 · CB8 · CB9 · CB10 · CB11 · CB21 · CB22 · CB23 · CB24 · CB25
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.