Residential delivery area · Connecticut
ZIP Code 06357: Niantic, CT
ZIP code 06357 uses the postal name Niantic, Connecticut and lies entirely in New London County (Census 2020 ZIP-county file). About 11,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $93,026 (Census Bureau, ACS 2020-2024). By Census place, 14% of its land lies in Niantic (a census-designated place); 86% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Niantic · its only residential ZIP
- County
- New London County
- Census places
- Niantic census-designated place
- House district
- CT-2 119th Congress
- State
- Connecticut
- Time zone
- Eastern
- Land area
- 10.6 sq mi · 1,070 people per sq mi
Where is ZIP code 06357?
06357 centers on 41.318°, -72.219° and covers 10.6 square miles of land plus 3.7 of water. It borders 3 ZIP codes: 06385, 06333, 06371.
The map draws ZIP code areas only. For the streets inside 06357, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 06357 compare with the rest of New London County?
| Measure | 06357 | In New London County | In CT |
|---|---|---|---|
| People (ACS 2020-2024) | 11,332 | 8th of 33 | 116th of 288 |
| Median household income | $93k | 20th of 26 | 161st of 228 |
| Median home value | $397k | 7th of 26 | 95th of 245 |
Its median household income is higher than in 76% of U.S. residential ZIP codes, and it is denser than 79% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 06357?
The 2020 Census counted 11,404 people in 06357; the ACS, which samples households over 2020-2024, estimates 11,332. Between the 2010 and 2020 censuses its population fell 9.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 11,332
- 2020 Census count
- 11,404−9.1% since 2010 (12,552)
- Households
- 5,000
- Median age
- 55.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 06357?
Of the 11,332 people the ACS estimates in 06357, 14.1% are under 18 and 31.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (81.0%).
- Under 1814.1%
- 18 to 6454.7%
- 65 and older31.2%
- White, not Hispanic81.0%
- Asian, not Hispanic6.8%
- Other or two or more4.3%
- Black, not Hispanic4.3%
- Hispanic or Latino3.6%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 06357 earn?
Median household income is $93,026 (ACS 2020-2024), the 20th highest of the 26 ranked ZIP codes in New London County. It is not measurably different from 2015-2019 ($97,341 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $93,026±$14,524
- Income per person
- $57,039
- Below the poverty line
- 5.5%
- Unemployed (of the labor force)
- 2.4%
- Adults 25+ with a bachelor's degree
- 46.2%
- Adjusted gross income per tax return, 2022
- $106,0986,030 returns; wages 56% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 06357?
FHFA's house price index for 06357, built from repeat sales and appraisals of the same homes, rose 101% from 2015 to 2025 and rose 72% from 2020 to 2025, and moved +7.4% in 2025.
- Median home value (owners' estimate)
- $397,300
- Median gross rent
- $1,429
- Homes owned by their occupants
- 76.1%
- Housing units
- 6,201
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 06357?
275 business establishments had a location in this ZIP code in 2023, 20 more than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services45
- Retail trade36
- Other services (except public administration)34
- Professional, scientific, and technical services27
- Construction23
- Health care and social assistance22
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 06357?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 06385 | Waterford | 15,966 | $101k | 4.4 mi |
| 06333 | East Lyme | 7,389 | $129k | 4.8 mi |
| 06371 | Old Lyme | 9,828 | $132k | 6.3 mi |
| 06376 | South Lyme | 89 | $156k | 2.4 mi (near) |
| 06320 | New London | 27,703 | $59k | 6.4 mi (near) |
| 06375 | Quaker Hill | 3,670 | $112k | 7.9 mi (near) |
| 06475 | Old Saybrook | 10,575 | $114k | 8.6 mi (near) |
| 11957 | Orient, NY | 1,121 | $94k | 9.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.