ZIP Code 02478
standardSource:
Belmont · Middlesex County · Massachusetts
- Population
- 24,664
- Median income
- $183,137
- Median home value
- $1,159,000
- Bachelor's or higher
- 80.9%
- Land area
- 12.0 sq mi
2,051/sq mi
▲ 140% vs US
higher than 98% of US ZIPs
▲ 317% vs US
higher than 98% of US ZIPs
Median age 42.9
New York
ZIP code 02478 in Belmont, Massachusetts has a population of 24,664. The median household income is $183,137, which is 140% above the national average. Median home value is $1,159,000, 317% above the US average. 80.9% of residents hold a bachelor's degree or higher.
ZIP code 02478 is classified by USPS as a standard delivery area and covers roughly 12.0 square miles in Belmont, Middlesex County, Massachusetts. The area is home to 24,664 residents, producing a population density of 2,051 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 02478 against Massachusetts and the nation.
On the economic side, the median household income for ZIP 02478 sits at $183,137 (58% above the Massachusetts average), while per-capita income is $95,484. The poverty rate stands at 3.6% and the unemployment rate at 4.3%. On housing, the median home value is $1,159,000 (93% above the state average) with median rent at $2,527 per month, and 64.7% of occupied units are owner-occupied, a direct signal of whether 02478 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 80.9% of adults hold a bachelor's degree or higher, the median age is 42.9, and the average commute is 29 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Middlesex County, so you can benchmark 02478 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 02478
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 02478.
- Health care and social assistance
Health care and social assistance
97 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
92 establishments
- Other services (except public administration)
Other services (except public administration)
76 establishments
- Retail trade
Retail trade
62 establishments
- Accommodation and food services
Accommodation and food services
60 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 02478, Belmont, MA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
24,664
Population
12.0
Area (sq mi)
2,051
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 02478?
42.9
Median Age
48.2%
Male
51.8%
Female
26.2%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$183,137
Median Household Income
+58% vs state
$95,484
Per Capita Income
3.6%
Poverty Rate
4.3%
Unemployment Rate
29.3 min
Mean Commute Time
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
10,881
Total Housing Units
10,412
Occupied Units
469
Vacant Units
2.59
Avg Household Size
Occupancy Type
$1,159,000
Median Home Value
+93% vs state
$2,527
Median Rent
1938
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+4.9%
YoY Change (2024)
274
HPI Index (2000 = 100)
+174%
Total Change Since 2000
Home values in ZIP 02478 have increased 4.9% over the past year (2024). Since 2000, this ZIP has seen +174% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | -3.9% | 206 |
| 2021 | +6.3% | 219 |
| 2022 | +6.4% | 233 |
| 2023 | +12.3% | 261 |
| 2024 | +4.9% | 274 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 623 business establishments in ZIP 02478, employing approximately 7,481 people with a combined annual payroll of $506,831,000.
623
Businesses
7,481
Employees
$506.8M
Annual Payroll
16
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Health care and social assistance | 97 | 15.6% |
| Professional, scientific, and technical services | 92 | 14.8% |
| Other services (except public administration) | 76 | 12.2% |
| Retail trade | 62 | 9.9% |
| Accommodation and food services | 60 | 9.6% |
| Construction | 54 | 8.7% |
| Finance and insurance | 34 | 5.5% |
| Real estate and rental and leasing | 31 | 5.0% |
| Administrative and support and waste management and remediation services | 31 | 5.0% |
| Educational services | 25 | 4.0% |
| Wholesale trade | 16 | 2.6% |
| Arts, entertainment, and recreation | 14 | 2.3% |
| Information | 13 | 2.1% |
| Manufacturing | 8 | 1.3% |
| Transportation and warehousing | 7 | 1.1% |
| Industries not classified | 3 | 0.5% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 02478 vs 02476 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 02476 | Arlington, MA | 16,532 | 1.4 mi |
| 02472 | Watertown, MA | 32,014 | 1.8 mi |
| 02452 | Waltham, MA | 14,238 | 2.1 mi |
| 02474 | Arlington, MA | 26,312 | 2.0 mi |
| 02140 | Cambridge, MA | 17,607 | 2.4 mi |
| 02458 | Newton, MA | 12,131 | 3.0 mi |
| 02138 | Cambridge, MA | 36,314 | 2.5 mi |
| 02144 | Somerville, MA | 23,891 | 3.0 mi |
| 02135 | Brighton, MA | 42,780 | 3.5 mi |
| 02460 | Newtonville, MA | 8,742 | 3.4 mi |
More ZIP Codes in Middlesex County
Related Areas
Frequently Asked Questions
What county is ZIP code 02478 in? ▼
What is the population of ZIP code 02478? ▼
What is the median household income in ZIP 02478? ▼
What is the average home value in ZIP 02478? ▼
What is the demographic makeup of ZIP 02478? ▼
How many businesses are in ZIP code 02478? ▼
What are the main industries in ZIP code 02478? ▼
How have home values changed in ZIP code 02478? ▼
What is the education level in ZIP code 02478? ▼
What is the average commute time in ZIP 02478? ▼
What percentage of residents own vs. rent in ZIP 02478? ▼
What is the poverty rate in ZIP code 02478? ▼
ZIP Code Research Guides
Official Data Resources for Belmont, MA
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.