DT1 postcode district
DT1 holds 793 live postcodes around Dorchester, in Dorset.
Towns and villages with their centre in DT1
| # | Place | County / council | Population |
|---|---|---|---|
| 1 | Dorchester | Dorset | 16,879 |
Wards
| Name | Share of postcodes |
|---|---|
| Dorchester West | 41% |
| Dorchester East | 30% |
| Dorchester Poundbury | 29% |
| Charminster St Mary's | 0% |
Westminster constituency
Every DT1 postcode falls in West Dorset.
Deprivation
The middle postcode here sits in decile 6 of the English Index of Multiple Deprivation (2021-Census LSOAs), where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 5% of this district's postcodes sit in the most deprived three deciles, 31% 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 DT area
DT2 · DT3 · DT4 · DT5 · DT6 · DT7 · DT8 · DT9 · DT10 · DT11
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.