Residential delivery area · New Hampshire
ZIP Code 03766: Lebanon, NH
ZIP code 03766 is in Lebanon, New Hampshire, entirely in Grafton County (Census 2020 ZIP-county file). About 11,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $100,881 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Lebanon · its only residential ZIP
- County
- Grafton County
- Census places
- Lebanon
- Micro area
- Lebanon-Claremont, NH-VT
- House district
- NH-2 119th Congress
- State
- New Hampshire
- Time zone
- Eastern
- Land area
- 32.0 sq mi · 350 people per sq mi
- PO Box ZIPs
- 03756 also use the name Lebanon
Where is ZIP code 03766?
03766 centers on 43.633°, -72.235° and covers 32.0 square miles of land plus 0.3 of water. It borders 5 ZIP codes: 03784, 03781, 03748, 03750, 03755.
The map draws ZIP code areas only. For the streets inside 03766, 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 03766 compare with the rest of Grafton County?
| Measure | 03766 | In Grafton County | In NH |
|---|---|---|---|
| People (ACS 2020-2024) | 11,195 | 1st of 37 | 33rd of 247 |
| Median household income | $101k | 5th of 16 | 81st of 158 |
| Median home value | $396k | 6th of 27 | 87th of 191 |
Its median household income is higher than in 82% of U.S. residential ZIP codes, and it is denser than 69% 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 03766?
The 2020 Census counted 9,838 people in 03766; the ACS, which samples households over 2020-2024, estimates 11,195. Between the 2010 and 2020 censuses its population grew 9.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 11,195
- 2020 Census count
- 9,838+9.8% since 2010 (8,958)
- Households
- 5,069
- Median age
- 38.7
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 03766?
Of the 11,195 people the ACS estimates in 03766, 15.7% are under 18 and 19.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (84.6%).
- Under 1815.7%
- 18 to 6464.6%
- 65 and older19.7%
- White, not Hispanic84.6%
- Asian, not Hispanic6.2%
- Other or two or more4.2%
- Hispanic or Latino4.1%
- Black, not Hispanic0.9%
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 03766 earn?
Median household income is $100,881 (ACS 2020-2024), the 5th highest of the 16 ranked ZIP codes in Grafton County. It rose from $86,218 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $100,881±$12,959
- Income per person
- $57,512
- Below the poverty line
- 6.4%
- Unemployed (of the labor force)
- 0.6%
- Adults 25+ with a bachelor's degree
- 58.2%
- Adjusted gross income per tax return, 2022
- $103,1805,590 returns; wages 70% 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 03766?
FHFA's house price index for 03766, built from repeat sales and appraisals of the same homes, rose 119% from 2015 to 2025 and rose 77% from 2020 to 2025, and moved +10.0% in 2025.
- Median home value (owners' estimate)
- $395,600
- Median gross rent
- $1,875
- Homes owned by their occupants
- 52.4%
- Housing units
- 5,781
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 03766?
396 business establishments had a location in this ZIP code in 2023, 30 fewer than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance59
- Retail trade58
- Professional, scientific, and technical services55
- Accommodation and food services33
- Other services (except public administration)26
- Wholesale trade24
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 03766?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 03784 | West Lebanon | 3,804 | $91k | 3.6 mi |
| 03781 | Plainfield | 1,918 | $110k | 6.0 mi |
| 03748 | Enfield | 4,563 | $95k | 6.2 mi |
| 03750 | Etna | 1,116 | $250k+ | 6.6 mi |
| 03755 | Hanover | 10,569 | $166k | 8.4 mi |
| 05088 | Wilder, VT | 581 | $72k | 4.7 mi (near) |
| 05009 | White River Junction, VT | 0 | – | 5.6 mi (near) |
| 05052 | North Hartland, VT | 346 | $52k | 6.7 mi (near) |
| 03770 | Meriden | 604 | $154k | 7.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name Lebanon?
1 more ZIP code carries the postal name Lebanon, NH without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 03756 | Grafton County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.