ZIP code 06423
Where is ZIP code 06423?
East Haddam, Connecticut
Middlesex County · Standard ZIP code
ZIP code 06423 belongs to East Haddam, Connecticut in Middlesex County. 06423 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 860 and 959. About 5,182 people live in the 06423 area, where the median household income is $107,549. The closest ZIP codes are 06469 (Moodus, 3.2 mi northwest), 06439 (Hadlyme, 3.4 mi south) and 06438 (Haddam, 5.2 mi west).
| ZIP code | 06423 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | East Haddam |
| State | Connecticut (CT) |
| County | Middlesex County |
| Time zone | Eastern Time · now |
| Area codes | 860, 959 |
| Coordinates | 41.4696, -72.4059 map |
| 3-digit prefix | 064 |
Population and income in 06423
| Population | 5,182 · lower than 64% of Connecticut ZIP codes |
|---|---|
| People per square mile | 142 · lower than 83% of Connecticut ZIP codes |
| Median age | 51.7 years · higher than 86% of Connecticut ZIP codes |
| Men / women | 52% / 48% |
| Median household income | $107,549 · higher than 50% of Connecticut ZIP codes |
| Income per person | $61,379 |
| Below the poverty line | 6.0% |
| Bachelor’s degree or higher | 39% of adults 25+ |
| Median home value | $373,700 · higher than 52% of Connecticut ZIP codes |
| Median rent | $1,663 a month |
| Housing units | 2,441 |
| Households | 2,137 (2.4 people on average) |
| Owners / renters | 96% / 4.1% |
| Land area | 36.57 sq mi (plus 1.71 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 06423. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 06423
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 06469 | Moodus, CT | 3.2 mi NW | Standard |
| 06439 | Hadlyme, CT | 3.4 mi S | PO Box only |
| 06438 | Haddam, CT | 5.2 mi W | Standard |
| 06412 | Chester, CT | 5.4 mi SW | Standard |
| 06417 | Deep River, CT | 6.8 mi S | Standard |
| 06420 | Salem, CT | 7.2 mi E | Standard |
| 06415 | Colchester, CT | 7.4 mi NE | Standard |
| 06474 | North Westchester, CT | 7.7 mi N | PO Box only |
| 06426 | Essex, CT | 7.9 mi S | Standard |
| 06409 | Centerbrook, CT | 8.5 mi S | Standard |
| 06441 | Higganum, CT | 8.8 mi W | Standard |
| 06442 | Ivoryton, CT | 9 mi S | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 06423 or measure the distance to another ZIP code.
How to address mail to 06423
123 MAIN ST
EAST HADDAM CT 06423
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (06423-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 06423?
- 06423 is a East Haddam, Connecticut ZIP code.
- What county is 06423 in?
- ZIP code 06423 is in Middlesex County, Connecticut.
- What time zone is ZIP code 06423 in?
- 06423 is in the Eastern Time zone (America/New_York).
- What area code is 06423?
- Phone numbers in ZIP code 06423 use area codes 860 and 959.
- What is the population of ZIP code 06423?
- About 5,182 people live in ZIP code 06423, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 06423?
- The median household income in 06423 is $107,549 a year, higher than 50% of Connecticut ZIP codes.
- What ZIP codes are near 06423?
- The nearest ZIP codes to 06423 are 06469 (Moodus, 3.2 miles), 06439 (Hadlyme, 3.4 miles), 06438 (Haddam, 5.2 miles) and 06412 (Chester, 5.4 miles).