ZIP code · Amston · Connecticut · United States
ZIP code 06231 — Amston
ZIP code 06231 serves Amston, Connecticut.
- Postal code
- 06231Single source Value from one source, not cross-checked.
- City
- Amston
- County
- Capitol Region FIPS 09013
- State
- Connecticut
- Country
- United States
- Coordinates
- 41.6290, -72.3646 — precision precise (locality)
View on OpenStreetMap - Population
- 3,645 (ZCTA, ACS 5-year)
- Population density
- 233 / sq mi
- Land area
- 15.7 sq mi (40.6 km²) (ZCTA, ACS 5-year)
- Median household income
- $159,844
- Per-capita income
- $70,633
- Median age
- 45.4
- Households
- 1,359
- Housing units
- 1,483
- Median home value
- $377,400
- Median gross rent
- $1,553 / month
- Congressional district
- CT-2 (119th Congress)
- USDA hardiness zone
- 6b (-5 to 0 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
Tools: compare 06231 with another ZIP · ZIPs within 25 miles · distance from 06231
Map of ZIP code 06231
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 18°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 36 | 39 | 47 | 59 | 70 | 78 | 83 | 81 | 74 | 63 | 52 | 41 |
| Avg low °F | 18 | 19 | 27 | 37 | 47 | 56 | 62 | 60 | 52 | 41 | 31 | 24 |
| Precip in | 3.2 | 2.7 | 4.0 | 4.0 | 3.4 | 3.9 | 2.7 | 4.4 | 4.1 | 3.8 | 3.5 | 3.7 |
NOAA 1991–2020 climate normals from the nearest station: WILLIMANTIC WINDHAM AP (12.2 mi) · NOAA NCEI
Places in ZIP 06231
- 1 restaurants & cafés
- 1 bars & pubs
- 2 parks
- 1 post offices
- 2 places of worship
- 1 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page