Residential delivery area · Michigan
ZIP Code 48103: Ann Arbor, MI
ZIP code 48103 uses the postal name Ann Arbor, Michigan and lies entirely in Washtenaw County (Census 2020 ZIP-county file). About 55,000 people live there (Census Bureau, ACS 2020-2024), the most populous of Ann Arbor's 5 residential ZIP codes. Median household income is $116,194 (Census Bureau, ACS 2020-2024). By Census place, 13% of its land lies in Ann Arbor; 87% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
Where is ZIP code 48103?
48103 centers on 42.261°, -83.846° and covers 66.5 square miles of land plus 0.5 of water. It borders 8 ZIP codes: 48108, 48104, 48109, 48130, 48176, 48105, 48118, 48158.
The map draws ZIP code areas only. For the streets inside 48103, 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 48103 compare with the rest of Ann Arbor?
| Measure | 48103 | In Ann Arbor | In Washtenaw County | In MI |
|---|---|---|---|---|
| People (ACS 2020-2024) | 55,054 | 1st of 5 | 2nd of 27 | 4th of 992 |
| Median household income | $116k | 1st of 4 | 5th of 24 | 39th of 774 |
| Median home value | $472k | 3rd of 4 | 5th of 25 | 24th of 779 |
Its median household income is higher than in 89% of U.S. residential ZIP codes, and it is denser than 77% 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 48103?
The 2020 Census counted 55,605 people in 48103; the ACS, which samples households over 2020-2024, estimates 55,054. Between the 2010 and 2020 censuses its population grew 4.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 55,054
- 2020 Census count
- 55,605+4.8% since 2010 (53,057)
- Households
- 24,258
- Median age
- 39.7
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 48103?
Of the 55,054 people the ACS estimates in 48103, 19.5% are under 18 and 18.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (69.6%).
- Under 1819.5%
- 18 to 6461.8%
- 65 and older18.7%
- White, not Hispanic69.6%
- Asian, not Hispanic9.4%
- Other or two or more8.2%
- Hispanic or Latino7.2%
- Black, not Hispanic5.5%
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 48103 earn?
Median household income is $116,194 (ACS 2020-2024), the 5th highest of the 24 ranked ZIP codes in Washtenaw County. It is not measurably different from 2015-2019 ($117,456 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $116,194
- Income per person
- $69,131
- Below the poverty line
- 8.4%
- Unemployed (of the labor force)
- 2.2%
- Adults 25+ with a bachelor's degree
- 75.3%
- Adjusted gross income per tax return, 2022
- $136,67127,880 returns; wages 64% 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 48103?
FHFA's house price index for 48103, built from repeat sales and appraisals of the same homes, rose 81% from 2015 to 2025 and rose 40% from 2020 to 2025, and moved +3.6% in 2025.
- Median home value (owners' estimate)
- $471,700
- Median gross rent
- $1,810
- Homes owned by their occupants
- 66.5%
- Housing units
- 25,578
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 48103?
1,478 business establishments had a location in this ZIP code in 2023, 36 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services258
- Retail trade191
- Health care and social assistance190
- Other services (except public administration)132
- Accommodation and food services123
- Construction104
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 48103?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 48108 | Ann Arbor | 27,666 | $89k | 6.5 mi |
| 48104 | Ann Arbor | 43,979 | $64k | 6.6 mi |
| 48109 | Ann Arbor | 5,939 | $14k | 7.4 mi |
| 48130 | Dexter | 16,986 | $129k | 7.8 mi |
| 48176 | Saline | 23,451 | $114k | 8.6 mi |
| 48105 | Ann Arbor | 37,048 | $95k | 8.9 mi |
| 48118 | Chelsea | 13,246 | $88k | 10.2 mi |
| 48158 | Manchester | 7,770 | $95k | 11.9 mi |
| 48189 | Whitmore Lake | 13,893 | $87k | 10.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.