Residential delivery area · Connecticut
ZIP Code 06791: Harwinton, CT
ZIP code 06791 uses the postal name Harwinton, Connecticut and lies entirely in Litchfield County (Census 2020 ZIP-county file). About 5,600 people live there (Census Bureau, ACS 2020-2024). Median household income is $129,762 (Census Bureau, ACS 2020-2024). By Census place, 28% of its land lies in Northwest Harwinton (a census-designated place); 72% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Harwinton · its only residential ZIP
- County
- Litchfield County
- Census places
- Northwest Harwinton census-designated place
- House district
- CT-5 119th Congress
- State
- Connecticut
- Time zone
- Eastern
- Land area
- 30.9 sq mi · 181 people per sq mi
Where is ZIP code 06791?
06791 centers on 41.761°, -73.060° and covers 30.9 square miles of land plus 0.3 of water. It borders 7 ZIP codes: 06778, 06013, 06790, 06057, 06787, 06786, 06759.
The map draws ZIP code areas only. For the streets inside 06791, 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 06791 compare with the rest of Litchfield County?
| Measure | 06791 | In Litchfield County | In CT |
|---|---|---|---|
| People (ACS 2020-2024) | 5,602 | 10th of 43 | 172nd of 288 |
| Median household income | $130k | 3rd of 23 | 58th of 228 |
| Median home value | $352k | 21st of 31 | 140th of 245 |
Its median household income is higher than in 93% of U.S. residential ZIP codes, and it is denser than 62% 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 06791?
The 2020 Census counted 5,546 people in 06791; the ACS, which samples households over 2020-2024, estimates 5,602. Between the 2010 and 2020 censuses its population fell 2.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 5,602
- 2020 Census count
- 5,546−2.1% since 2010 (5,666)
- Households
- 2,158
- Median age
- 46.2
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 06791?
Of the 5,602 people the ACS estimates in 06791, 19.9% are under 18 and 22.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (89.9%).
- Under 1819.9%
- 18 to 6457.7%
- 65 and older22.3%
- White, not Hispanic89.9%
- Hispanic or Latino5.6%
- Other or two or more4.1%
- Asian, not Hispanic0.3%
- Black, not Hispanic0.1%
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 06791 earn?
Median household income is $129,762 (ACS 2020-2024), the 3rd highest of the 23 ranked ZIP codes in Litchfield County. It is not measurably different from 2015-2019 ($136,444 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $129,762±$18,124
- Income per person
- $57,493
- Below the poverty line
- 4.8%
- Unemployed (of the labor force)
- 4.0%
- Adults 25+ with a bachelor's degree
- 40.0%
- Adjusted gross income per tax return, 2022
- $101,9242,930 returns; wages 66% 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 06791?
FHFA's house price index for 06791, built from repeat sales and appraisals of the same homes, rose 64% from 2015 to 2025 and rose 52% from 2020 to 2025, and moved +13.7% in 2025.
- Median home value (owners' estimate)
- $351,700
- Median gross rent
- $1,504
- Homes owned by their occupants
- 93.0%
- Housing units
- 2,285
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 06791?
88 business establishments had a location in this ZIP code in 2023, 16 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction31
- Professional, scientific, and technical services9
- Administrative and support and waste management and remediation services9
- Manufacturing6
- Health care and social assistance6
- Retail trade5
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 06791?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 06778 | Northfield | 1,574 | $81k | 3.7 mi |
| 06013 | Burlington | 9,680 | $165k | 5.8 mi |
| 06790 | Torrington | 35,566 | $71k | 6.2 mi |
| 06057 | New Hartford | 6,363 | $118k | 6.4 mi |
| 06787 | Thomaston | 7,509 | $103k | 6.4 mi |
| 06786 | Terryville | 9,768 | $87k | 6.5 mi |
| 06759 | Litchfield | 5,442 | $106k | 8.2 mi |
| 06782 | Plymouth | 1,978 | $125k | 8.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.