ZIP code · Ayer · Massachusetts · United States
ZIP code 01432 — Ayer
ZIP code 01432 serves Ayer, Massachusetts.
- Postal code
- 01432Single source Value from one source, not cross-checked.
- City
- Ayer
- County
- Middlesex FIPS 25017
- State
- Massachusetts
- Country
- United States
- Coordinates
- 42.5591, -71.5788 — precision precise (locality)
View on OpenStreetMap - Population
- 8,124 (ZCTA, ACS 5-year)
- Population density
- 953 / sq mi
- Land area
- 8.5 sq mi (22.1 km²) (ZCTA, ACS 5-year)
- Median household income
- $105,142
- Per-capita income
- $56,876
- Median age
- 39.8
- Households
- 3,510
- Housing units
- 3,770
- Median home value
- $419,800
- Median gross rent
- $1,373 / month
- Congressional district
- MA-3 (119th Congress)
- USDA hardiness zone
- 6a (-10 to -5 °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)
- Area code
- 978Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 01432 with another ZIP · ZIPs within 25 miles · distance from 01432
Map of ZIP code 01432
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 16°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 34 | 37 | 45 | 58 | 70 | 78 | 83 | 82 | 74 | 62 | 50 | 40 |
| Avg low °F | 16 | 17 | 25 | 35 | 46 | 56 | 62 | 60 | 51 | 40 | 30 | 22 |
| Precip in | 2.6 | 2.8 | 3.8 | 3.8 | 3.6 | 4.1 | 3.5 | 3.4 | 4.0 | 4.5 | 3.6 | 3.7 |
NOAA 1991–2020 climate normals from the nearest station: FITCHBURG MUNI AP (9.0 mi) · NOAA NCEI
Places in ZIP 01432
- 3 schools
- 1 pharmacies
- 17 restaurants & cafés
- 3 bars & pubs
- 4 parks
- 4 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 1 post offices
- 8 places of worship
- 3 banks
- 4 gas stations
- 1 EV charging stations
- 2 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