Residential delivery area · Michigan
ZIP Code 48118: Chelsea, MI
ZIP code 48118 uses the postal name Chelsea, Michigan and lies entirely in Washtenaw County (Census 2020 ZIP-county file). About 13,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $88,278 (Census Bureau, ACS 2020-2024). By Census place, 4% of its land lies in Chelsea; 96% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Chelsea · its only residential ZIP
- County
- Washtenaw County
- Census places
- Chelsea
- Metro area
- Ann Arbor, MI
- House district
- MI-6 119th Congress
- State
- Michigan
- Time zone
- Eastern
- Land area
- 86.2 sq mi · 154 people per sq mi
Where is ZIP code 48118?
48118 centers on 42.312°, -84.034° and covers 86.2 square miles of land plus 4.2 of water. It borders 6 ZIP codes: 48130, 49240, 48103, 48158, 48137, 49285.
The map draws ZIP code areas only. For the streets inside 48118, 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 48118 compare with the rest of Washtenaw County?
| Measure | 48118 | In Washtenaw County | In MI |
|---|---|---|---|
| People (ACS 2020-2024) | 13,246 | 17th of 27 | 281st of 992 |
| Median household income | $88k | 16th of 24 | 172nd of 774 |
| Median home value | $357k | 12th of 25 | 85th of 779 |
Its median household income is higher than in 72% of U.S. residential ZIP codes, and it is denser than 59% 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 48118?
The 2020 Census counted 13,309 people in 48118; the ACS, which samples households over 2020-2024, estimates 13,246. Between the 2010 and 2020 censuses its population grew 6.0% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 13,246
- 2020 Census count
- 13,309+6.0% since 2010 (12,552)
- Households
- 5,733
- Median age
- 48.3
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 48118?
Of the 13,246 people the ACS estimates in 48118, 20.9% are under 18 and 27.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (93.3%).
- Under 1820.9%
- 18 to 6451.1%
- 65 and older27.9%
- White, not Hispanic93.3%
- Other or two or more3.4%
- Hispanic or Latino1.5%
- Black, not Hispanic1.3%
- Asian, not Hispanic0.5%
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 48118 earn?
Median household income is $88,278 (ACS 2020-2024), the 16th highest of the 24 ranked ZIP codes in Washtenaw County. It fell from $109,684 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $88,278±$14,050
- Income per person
- $52,799
- Below the poverty line
- 3.0%
- Unemployed (of the labor force)
- 3.0%
- Adults 25+ with a bachelor's degree
- 51.3%
- Adjusted gross income per tax return, 2022
- $109,3357,080 returns; wages 60% 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 48118?
FHFA's house price index for 48118, built from repeat sales and appraisals of the same homes, rose 89% from 2015 to 2025 and rose 50% from 2020 to 2025, and moved +7.7% in 2025.
- Median home value (owners' estimate)
- $357,200
- Median gross rent
- $1,636
- Homes owned by their occupants
- 80.2%
- Housing units
- 5,964
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 48118?
362 business establishments had a location in this ZIP code in 2023, 20 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance59
- Retail trade52
- Other services (except public administration)38
- Professional, scientific, and technical services35
- Accommodation and food services34
- Construction33
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 48118?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 48130 | Dexter | 16,986 | $129k | 7.3 mi |
| 49240 | Grass Lake | 8,863 | $100k | 7.9 mi |
| 48103 | Ann Arbor | 55,054 | $116k | 10.2 mi |
| 48158 | Manchester | 7,770 | $95k | 10.8 mi |
| 48137 | Gregory | 4,157 | $79k | 11.2 mi |
| 49285 | Stockbridge | 6,240 | $73k | 13.8 mi |
| 48169 | Pinckney | 20,519 | $109k | 11.3 mi (near) |
| 49259 | Munith | 2,653 | $67k | 12.3 mi (near) |
| 49263 | Norvell | 0 | – | 13.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.