ZIP code 02451
Where is ZIP code 02451?
Waltham, Massachusetts
Middlesex County · Standard ZIP code
ZIP code 02451 belongs to Waltham, Massachusetts in Middlesex County. 02451 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 339 and 781. About 17,393 people live in the 02451 area, where the median household income is $122,335. The closest ZIP codes are 02452 (Waltham, 1.4 mi east), 02453 (Waltham, 2.4 mi south) and 02454 (Waltham, 2.9 mi south).
| ZIP code | 02451 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Waltham |
| Also accepted | North Waltham |
| State | Massachusetts (MA) |
| County | Middlesex County |
| Time zone | Eastern Time · now |
| Area codes | 339, 781 |
| Coordinates | 42.3986, -71.2451 map |
| 3-digit prefix | 024 |
Population and income in 02451
| Population | 17,393 · higher than 70% of Massachusetts ZIP codes |
|---|---|
| People per square mile | 3,269 · higher than 77% of Massachusetts ZIP codes |
| Median age | 40.3 years · lower than 71% of Massachusetts ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $122,335 · higher than 63% of Massachusetts ZIP codes |
| Income per person | $67,455 |
| Below the poverty line | 8.3% |
| Bachelor’s degree or higher | 56% of adults 25+ |
| Median home value | $753,000 · higher than 79% of Massachusetts ZIP codes |
| Median rent | $2,677 a month |
| Housing units | 7,748 |
| Households | 7,481 (2.3 people on average) |
| Owners / renters | 59% / 41% |
| Land area | 5.32 sq mi (plus 0.71 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 02451. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 02451
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 02452 | Waltham, MA | 1.4 mi E | Standard |
| 02453 | Waltham, MA | 2.4 mi S | Standard |
| 02454 | Waltham, MA | 2.9 mi S | PO Box only |
| 02421 | Lexington, MA | 3.2 mi N | Standard |
| 02455 | North Waltham, MA | 3.2 mi SE | PO Box only |
| 02479 | Waverley, MA | 3.3 mi E | PO Box only |
| 02495 | Nonantum, MA | 3.3 mi SE | PO Box only |
| 02478 | Belmont, MA | 3.4 mi E | Standard |
| 02465 | West Newton, MA | 3.5 mi S | Standard |
| 02475 | Arlington Heights, MA | 3.6 mi NE | PO Box only |
| 02471 | Watertown, MA | 3.7 mi SE | PO Box only |
| 02477 | Watertown, MA | 3.7 mi SE | Unique |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 02451 or measure the distance to another ZIP code.
How to address mail to 02451
123 MAIN ST
WALTHAM MA 02451
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts NORTH WALTHAM as the city name for 02451. Adding the 4-digit ZIP+4 code (02451-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Waltham, MA
All Waltham ZIP codes with population and income →
Questions
- What city is ZIP code 02451?
- 02451 is a Waltham, Massachusetts ZIP code. North Waltham is also accepted as the city name.
- What county is 02451 in?
- ZIP code 02451 is in Middlesex County, Massachusetts.
- What time zone is ZIP code 02451 in?
- 02451 is in the Eastern Time zone (America/New_York).
- What area code is 02451?
- Phone numbers in ZIP code 02451 use area codes 339 and 781.
- What is the population of ZIP code 02451?
- About 17,393 people live in ZIP code 02451, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 02451?
- The median household income in 02451 is $122,335 a year, higher than 63% of Massachusetts ZIP codes.
- What ZIP codes are near 02451?
- The nearest ZIP codes to 02451 are 02452 (Waltham, 1.4 miles), 02453 (Waltham, 2.4 miles), 02454 (Waltham, 2.9 miles) and 02421 (Lexington, 3.2 miles).