Zip Code 02478
Belmont, Massachusetts — Middlesex County
📍 ZIP code 02478 is in Belmont, Middlesex County, Massachusetts.
ZIP code 02478 is located in Belmont, Middlesex County, Massachusetts. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 26,966. The area code for ZIP code 02478 is 781.
Quick Answer
Zip code 02478 is in Belmont, Massachusetts (Middlesex County). It has a population of 26,966, median household income of $177,790, and median home value of $1,108,800.
Population
26,966
Income
$177,790
Home Value
$1,108,800
Climate
85°F / 19°F
About Zip Code 02478
Zip code 02478 is located in Belmont, Massachusetts, within Middlesex County. Home to approximately 26,966 residents, this area sits at an elevation of 119 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 781.
The median household income is $177,790 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $1,108,800, and the cost of living index is 250 (150% above the national average of 100).
Summers average a high of 85°F while winters drop to 19°F. The area receives about 49 in of rain and 32 in of snow annually. The zip code covers 4.6 square miles of land area and 0.1 square miles of water.
Key Statistics
26,966
$177,790
$1,108,800
Eastern (EST/EDT)
781
119 ft
4.6 sq mi
42.4
10,811
Advertisement
Compare With Nearby Zip Codes
| Metric | 02478 | 02476 | 02452 | 02472 | 02474 | 02140 |
|---|---|---|---|---|---|---|
| City | Belmont, MA | Arlington, MA | Waltham, MA | Waltham, MA | Arlington, MA | Cambridge, MA |
| Population | 26,966 | 17,732 | 16,173 | 35,317 | 28,283 | 21,361 |
| Median Income | $177,790 | $145,150 | $112,902 | $123,383 | $139,199 | $136,382 |
| Home Value | $1,108,800 | $882,100 | $779,900 | $737,600 | $887,000 | $1,070,200 |
| Cost of Living | 250 | 250 | 212 | 217 | 250 | 250 |
| Median Age | 42.4 | 45.8 | 32.4 | 38.8 | 38.3 | 34.5 |
Cost of Living
100 = National Average. Belmont's cost of living is 150% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
6.2x
Demographics
Zip code 02478 has a population of 26,966 people with a median age of 42.4. There are 10,811 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Belmont (02478) population trend from 2010 to 2024
↓ -17.6%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
85°F
19°F
49 in
32 in
Belmont experiences warm summers with average highs around 85°F. Winters are cold with lows averaging 19°F. With 32 in of annual snowfall, residents should be prepared for significant winter weather.
Advertisement
Housing & Economy
Median Home Value
$1,108,800
Median Household Income
$177,790
With 10,811 housing units across 4.6 square miles, 02478 has a housing density of 2,350 units per square mile. The home price-to-income ratio is 6.2x.
Location & Geography
Latitude
42.3953°
Longitude
-71.1803°
Land Area
4.6 sq mi
Water Area
0.1 sq mi
Nearby Zip Codes
Zip codes closest to 02478 (Belmont, MA) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 02478's $177,790. A way to compare Belmont 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 02478 (Belmont, 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.
Explore Massachusetts
Popular "Near Me" Searches
Advertisement
People Also Ask
What zip code is Belmont, Massachusetts?
Belmont, Massachusetts uses zip code 02478.
What county is zip code 02478 in?
Zip code 02478 is located in Middlesex County, Massachusetts.
What is the population of zip code 02478?
The population of zip code 02478 is 26,966 with a median age of 42.4.
Is 02478 in Belmont, Massachusetts?
Yes, zip code 02478 is in Belmont, Middlesex County, Massachusetts. The area code is 781.
Frequently Asked Questions
What city is zip code 02478 in?
Zip code 02478 is in Belmont, Massachusetts. It is part of Middlesex County and uses the Eastern (EST/EDT) timezone.
What is zip code 02478?
Zip code 02478 is a U.S. postal code in Belmont, Massachusetts (Middlesex County). It has a population of 26,966 and covers 4.6 square miles.
What is the population of zip code 02478?
The population of zip code 02478 (Belmont, MA) is 26,966 with a median age of 42.4. There are approximately 10,811 housing units in this area.
What is the median income in zip code 02478?
The median household income in zip code 02478 (Belmont, MA) is $177,790 per year. The cost of living index is 250 (100 = national average).
What is the average home price in zip code 02478?
The median home value in zip code 02478 (Belmont, MA) is $1,108,800. The cost of living index is 250 compared to the national average of 100.
What county is zip code 02478 in?
Zip code 02478 is located in Middlesex County, Massachusetts. The primary city is Belmont.
What is the area code for zip code 02478?
Zip code 02478 in Belmont, MA uses area code 781. It is located in the Eastern (EST/EDT) timezone.
Is zip code 02478 a good place to live?
Zip code 02478 (Belmont, MA) has a cost of living index of 250 (100 = national average), a median household income of $177,790, and median home values of $1,108,800. The median age is 42.4. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 02478?
The cost of living index for zip code 02478 (Belmont, MA) is 250, where 100 represents the national average. This area is above the national average. Median home value: $1,108,800.
What schools serve zip code 02478?
Zip code 02478 in Belmont, 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.
People Also Searched For
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.