Zip Code 01720
Acton, Massachusetts — Middlesex County
📍 ZIP code 01720 is in Acton, Middlesex County, Massachusetts.
ZIP code 01720 is located in Acton, Middlesex County, Massachusetts. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 23,322. The area code for ZIP code 01720 is 978.
Quick Answer
Zip code 01720 is in Acton, Massachusetts (Middlesex County). It has a population of 23,322, median household income of $154,101, and median home value of $766,500.
Population
23,322
Income
$154,101
Home Value
$766,500
Climate
87°F / 15°F
About Zip Code 01720
Zip code 01720 is located in Acton, Massachusetts, within Middlesex County. Home to approximately 23,322 residents, this area sits at an elevation of 240 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 978.
The median household income is $154,101 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $766,500, and the cost of living index is 232 (132% above the national average of 100).
Summers average a high of 87°F while winters drop to 15°F. The area receives about 50 in of rain and 33 in of snow annually. The zip code covers 19.7 square miles of land area and 0.4 square miles of water.
Key Statistics
23,322
$154,101
$766,500
Eastern (EST/EDT)
978
240 ft
19.7 sq mi
44.1
8,937
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Compare With Nearby Zip Codes
| Metric | 01720 | 01718 | 01742 | 01754 | 01719 | 01460 |
|---|---|---|---|---|---|---|
| City | Acton, MA | Acton, MA | Concord, MA | Maynard, MA | Acton, MA | Littleton, MA |
| Population | 23,322 | 528 | 18,337 | 10,663 | 5,468 | 10,150 |
| Median Income | $154,101 | $125,972 | $211,435 | $119,549 | $151,000 | $146,250 |
| Home Value | $766,500 | $359,300 | $1,139,200 | $494,200 | $671,800 | $633,000 |
| Cost of Living | 232 | 125 | 250 | 159 | 221 | 208 |
| Median Age | 44.1 | 39.8 | 44.7 | 43.2 | 42.8 | 43.1 |
Cost of Living
100 = National Average. Acton's cost of living is 132% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
5.0x
Demographics
Zip code 01720 has a population of 23,322 people with a median age of 44.1. There are 8,937 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Acton (01720) population trend from 2010 to 2024
↑ 53.8%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
87°F
15°F
50 in
33 in
Acton experiences warm summers with average highs around 87°F. Winters are cold with lows averaging 15°F. With 33 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$766,500
Median Household Income
$154,101
With 8,937 housing units across 19.7 square miles, 01720 has a housing density of 454 units per square mile. The home price-to-income ratio is 5.0x.
Location & Geography
Latitude
42.4840°
Longitude
-71.4385°
Land Area
19.7 sq mi
Water Area
0.4 sq mi
Nearby Zip Codes
Zip codes closest to 01720 (Acton, MA) with distances:
All Zip Codes in Acton, MA
Other zip codes serving Acton:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 01720's $154,101. A way to compare Acton to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 01720 (Acton, MA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Acton, Massachusetts?
Acton, Massachusetts uses zip code 01720 along with 2 other zip codes.
What county is zip code 01720 in?
Zip code 01720 is located in Middlesex County, Massachusetts.
What is the population of zip code 01720?
The population of zip code 01720 is 23,322 with a median age of 44.1.
Is 01720 in Acton, Massachusetts?
Yes, zip code 01720 is in Acton, Middlesex County, Massachusetts. The area code is 978.
Frequently Asked Questions
What city is zip code 01720 in?
Zip code 01720 is in Acton, Massachusetts. It is part of Middlesex County and uses the Eastern (EST/EDT) timezone.
What is zip code 01720?
Zip code 01720 is a U.S. postal code in Acton, Massachusetts (Middlesex County). It has a population of 23,322 and covers 19.7 square miles.
What is the population of zip code 01720?
The population of zip code 01720 (Acton, MA) is 23,322 with a median age of 44.1. There are approximately 8,937 housing units in this area.
What is the median income in zip code 01720?
The median household income in zip code 01720 (Acton, MA) is $154,101 per year. The cost of living index is 232 (100 = national average).
What is the average home price in zip code 01720?
The median home value in zip code 01720 (Acton, MA) is $766,500. The cost of living index is 232 compared to the national average of 100.
What county is zip code 01720 in?
Zip code 01720 is located in Middlesex County, Massachusetts. The primary city is Acton.
What is the area code for zip code 01720?
Zip code 01720 in Acton, MA uses area code 978. It is located in the Eastern (EST/EDT) timezone.
Is zip code 01720 a good place to live?
Zip code 01720 (Acton, MA) has a cost of living index of 232 (100 = national average), a median household income of $154,101, and median home values of $766,500. The median age is 44.1. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 01720?
The cost of living index for zip code 01720 (Acton, MA) is 232, where 100 represents the national average. This area is above the national average. Median home value: $766,500.
What schools serve zip code 01720?
Zip code 01720 in Acton, Massachusetts is served by the local school district of Middlesex County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.