Postal Code AL4 - United Kingdom
| Area of Postal Code AL4 | 49.6 km² |
| Population | 27,669 |
| Male Population | 13,591 (49.1%) |
| Female Population | 14,078 (50.9%) |
| Population change from 1975 to 2015 | +24.3% |
| Population change from 2000 to 2015 | +12.5% |
| Median Age | 40.9 years |
| Male Median Age | 40.3 years |
| Female Median Age | 41.5 years |
| Area Codes | 1727 |
| Postal Code Extensions | AL4 0AA, AL4 0AB, AL4 0AD, AL4 0AE, AL4 0AF, AL4 0AG, AL4 0AH, AL4 0AJ, AL4 0AL, AL4 0AN More |
| Associated Cities | St Albans, Hatfield, Hertfordshire, Shenley, Hertfordshire, Wheathampstead |
| Neighborhoods | Colney Heath, Sandridge, Wheathampstead |
| Timezone | British Summer Time |
| Coordinates | 51.76579794337439° / -0.2993099641948645° |
| Related Postal Codes | AB9, AL1, AL10, AL2, AL3, AL5, AL6, AL7, AL8, AL9 |
Map of Postal Code AL4 - United Kingdom
Interactive Map
Postal Code AL4 - United Kingdom Population
Years 1975 to 2020
| Data | 1975 | 1990 | 2000 | 2015 | 2020 |
|---|---|---|---|---|---|
| Population | 22,260 | 23,424 | 24,590 | 27,669 | 28,923 |
| Population Density | 449.2 / km² | 472.6 / km² | 496.2 / km² | 558.3 / km² | 583.6 / km² |
Postal Code AL4 - United Kingdom Population change from 2000 to 2015
Increase of 12.5% from year 2000 to 2015
| Location | Change since 1975 | Change since 1990 | Change since 2000 |
|---|---|---|---|
| Postal Code AL4 - United Kingdom | +24.3% | +18.1% | +12.5% |
| United Kingdom | +15.2% | +13.3% | +9.9% |
Postal Code AL4 - United Kingdom Median Age
Median Age: 40.9 years
| Location | Median Age | Median Age (Female) | Median Age (Male) |
|---|---|---|---|
| Postal Code AL4 - United Kingdom | 40.9 yrs | 41.5 yrs | 40.3 yrs |
| United Kingdom | 39.6 yrs | 40.6 yrs | 38.5 yrs |
Postal Code AL4 Population Density
Population Density: 558 / km²
| Location | Population | Area | Density |
|---|---|---|---|
| Postal Code AL4 | 27,669 | 49.6 km² | 558 / km² |
| United Kingdom | 64.5 million | 247,916.6 km² | 260 / km² |
Postal Code AL4 - United Kingdom Historical and Projected Population
Estimated Population from 1200 to 2100
- JRC (European Commission's Joint Research Centre) work on the GHS built-up grid
- CIESIN (Center for International Earth Science Information Network)
- [Link] Klein Goldewijk, K., Beusen, A., Doelman, J., and Stehfest, E.: Anthropogenic land use estimates for the Holocene – HYDE 3.2, Earth Syst. Sci. Data, 9, 927–953, https://doi.org/10.5194/essd-9-927-2017, 2017.
Neighborhoods
Business Distribution by neighborhood in Postal Code AL4 - United Kingdom
Area Codes
Percentage Area Codes used by businesses in Postal Code AL4 - United Kingdom

Industries
Business Distribution by Industry in Postal Code AL4 - United Kingdom
| Industry Description | Number of Establishments | Average Age of Business |
|---|---|---|
| Accountants | 62 | 26.9 years |
| Beauty salons | 51 | — |
| Car repair | 66 | 30.9 years |
| Construction of buildings | 112 | 29.9 years |
| Corporate management | 133 | 26.5 years |
| Electrical installation | 75 | 23.8 years |
| Electronics stores | 49 | 27.5 years |
| General cleaning services | 48 | — |
| General contractors | 73 | 23.6 years |
| Health and medical | 62 | 19.1 years |
| Real estate | 48 | 23.4 years |
| Restaurants | 53 | — |
| Shopping | 96 | 31.5 years |
| Shopping other | 77 | 23.4 years |
Business distribution by price for Postal Code AL4 - United Kingdom
Human Development Index (HDI)
Statistic composite index of life expectancy, education, and per capita income.
Postal Code AL4 CO2 Emissions
Carbon Dioxide (CO2) Emissions Per Capita in Tonnes Per Year
| Location | CO2 Emissions | CO2 Emissions Per Capita | CO2 Emissions Intensity |
|---|---|---|---|
| Postal Code AL4 | 360,051 tn | 13.01 tn | 7,265.1 tons/km² |
| United Kingdom | 735,672,544 tn | 11.4 tn | 2,967.4 tons/km² |
| 2013 CO2 emissions (tonnes/year) | 360,051 tn |
| 2013 CO2 emissions (tonnes/year) per capita | 13.01 tn |
| 2013 CO2 emissions intensity (tonnes/km²/year) | 7,265.1 tons/km² |
Natural Hazards Risk
Relative risk out of 10
| Hazard | Risk Level |
|---|---|
| Flood | High (10) |
Recent Nearby Earthquakes
Magnitude 3.0 and greater
| Date▼ | Time↕ | Magnitude↕ | Distance↕ | Depth↕ | Location↕ | Link |
|---|---|---|---|---|---|---|
| 2/26/19 | 7:42 PM | 3.3 | 61.7 km | 10,000 m | 3km SE of Dorking, United Kingdom | usgs.gov |
| 5/11/94 | 6:08 PM | 3.7 | 95.9 km | 10,000 m | England, United Kingdom | usgs.gov |
| 2/16/92 | 5:22 PM | 3.4 | 72.4 km | 10,000 m | England, United Kingdom | usgs.gov |
| 4/30/87 | 11:09 PM | 3.4 | 94.4 km | 10,000 m | England, United Kingdom | usgs.gov |
| 12/26/86 | 12:50 PM | 3.4 | 73.1 km | 10,000 m | England, United Kingdom | usgs.gov |
| 12/2/85 | 9:40 AM | 3.3 | 73.8 km | 13,000 m | England, United Kingdom | usgs.gov |
About Our Data
The data on this page is estimated using a number of publicly available tools and resources. It is provided without warranty, and could contain inaccuracies. Use at your own risk.