ZIP code 06437
Where is ZIP code 06437?
Guilford, Connecticut
New Haven County · Standard ZIP code
ZIP code 06437 belongs to Guilford, Connecticut in New Haven County. 06437 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 203, 475, 860 and 959. About 22,067 people live in the 06437 area, where the median household income is $137,615. The closest ZIP codes are 06443 (Madison, 4.3 mi east), 06471 (North Branford, 4.5 mi west) and 06405 (Branford, 6.4 mi west).
| ZIP code | 06437 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Guilford |
| State | Connecticut (CT) |
| County | New Haven County |
| Time zone | Eastern Time · now |
| Area codes | 203, 475, 860, 959 |
| Coordinates | 41.3154, -72.6968 map |
| 3-digit prefix | 064 |
Population and income in 06437
| Population | 22,067 · higher than 81% of Connecticut ZIP codes |
|---|---|
| People per square mile | 468 · lower than 56% of Connecticut ZIP codes |
| Median age | 51.2 years · higher than 84% of Connecticut ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $137,615 · higher than 81% of Connecticut ZIP codes |
| Income per person | $73,108 |
| Below the poverty line | 2.8% |
| Bachelor’s degree or higher | 61% of adults 25+ |
| Median home value | $515,000 · higher than 84% of Connecticut ZIP codes |
| Median rent | $1,717 a month |
| Housing units | 9,825 |
| Households | 8,856 (2.47 people on average) |
| Owners / renters | 84% / 16% |
| Land area | 47.12 sq mi (plus 1.57 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 06437. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 06437
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 06443 | Madison, CT | 4.3 mi E | Standard |
| 06471 | North Branford, CT | 4.5 mi W | Standard |
| 06405 | Branford, CT | 6.4 mi W | Standard |
| 06472 | Northford, CT | 7.1 mi NW | Standard |
| 06419 | Killingworth, CT | 7.5 mi NE | Standard |
| 06513 | New Haven, CT | 8.8 mi W | Standard |
| 06413 | Clinton, CT | 8.9 mi E | Standard |
| 06473 | North Haven, CT | 9.6 mi NW | Standard |
| 06422 | Durham, CT | 10.3 mi N | Standard |
| 06495 | Wallingford, CT | 10.7 mi NW | Unique |
| 06517 | Hamden, CT | 11.4 mi W | Standard |
| 06540 | New Haven, CT | 11.6 mi W | Unique |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 06437 or measure the distance to another ZIP code.
How to address mail to 06437
123 MAIN ST
GUILFORD CT 06437
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (06437-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 06437?
- 06437 is a Guilford, Connecticut ZIP code.
- What county is 06437 in?
- ZIP code 06437 is in New Haven County, Connecticut.
- What time zone is ZIP code 06437 in?
- 06437 is in the Eastern Time zone (America/New_York).
- What area code is 06437?
- Phone numbers in ZIP code 06437 use area codes 203, 475, 860 and 959.
- What is the population of ZIP code 06437?
- About 22,067 people live in ZIP code 06437, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 06437?
- The median household income in 06437 is $137,615 a year, higher than 81% of Connecticut ZIP codes.
- What ZIP codes are near 06437?
- The nearest ZIP codes to 06437 are 06443 (Madison, 4.3 miles), 06471 (North Branford, 4.5 miles), 06405 (Branford, 6.4 miles) and 06472 (Northford, 7.1 miles).