Residential delivery area · Michigan
ZIP Code 48439: Grand Blanc, MI
ZIP code 48439 uses the postal name Grand Blanc, Michigan and lies mostly in Genesee County (99% of its land) with the rest in Oakland County (Census 2020 ZIP-county file). About 52,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $88,490 (Census Bureau, ACS 2020-2024). By Census place, 7% of its land lies in Grand Blanc, and 4% in smaller places; 90% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Grand Blanc · its only residential ZIP
- County
- Genesee County (99%); Oakland County (1%)
- Census places
- Grand Blanc
- Metro area
- Flint, MI
- House districts
- MI-8 (99%), MI-9 (1%) 119th Congress, by share of land
- State
- Michigan
- Time zone
- Eastern
- Land area
- 54.5 sq mi · 952 people per sq mi
- PO Box ZIPs
- 48480 also use the name Grand Blanc
Where is ZIP code 48439?
48439 centers on 42.917°, -83.631° and covers 54.5 square miles of land plus 0.5 of water. It borders 10 ZIP codes: 48529, 48519, 48411, 48507, 48438, 48442, 48473, 48423, 48451, 48430.
The map draws ZIP code areas only. For the streets inside 48439, 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 48439 compare with the rest of Genesee County?
| Measure | 48439 | In Genesee County | In MI |
|---|---|---|---|
| People (ACS 2020-2024) | 51,900 | 1st of 32 | 7th of 992 |
| Median household income | $89k | 5th of 29 | 169th of 774 |
| Median home value | $262k | 6th of 29 | 228th of 779 |
Its median household income is higher than in 72% of U.S. residential ZIP codes, and it is denser than 78% 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 48439?
The 2020 Census counted 51,719 people in 48439; the ACS, which samples households over 2020-2024, estimates 51,900. Between the 2010 and 2020 censuses its population grew 5.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 51,900
- 2020 Census count
- 51,719+5.1% since 2010 (49,209)
- Households
- 21,425
- Median age
- 42.1
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 48439?
Of the 51,900 people the ACS estimates in 48439, 21.2% are under 18 and 20.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (75.4%).
- Under 1821.2%
- 18 to 6458.7%
- 65 and older20.2%
- White, not Hispanic75.4%
- Black, not Hispanic9.7%
- Other or two or more6.5%
- Hispanic or Latino4.3%
- Asian, not Hispanic4.2%
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 48439 earn?
Median household income is $88,490 (ACS 2020-2024), the 5th highest of the 29 ranked ZIP codes in Genesee County. It is not measurably different from 2015-2019 ($88,769 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $88,490
- Income per person
- $47,222
- Below the poverty line
- 7.6%
- Unemployed (of the labor force)
- 4.6%
- Adults 25+ with a bachelor's degree
- 43.8%
- Adjusted gross income per tax return, 2022
- $84,85726,550 returns; wages 69% 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 48439?
FHFA's house price index for 48439, built from repeat sales and appraisals of the same homes, rose 93% from 2015 to 2025 and rose 48% from 2020 to 2025, and moved +5.1% in 2025.
- Median home value (owners' estimate)
- $261,600
- Median gross rent
- $1,123
- Homes owned by their occupants
- 74.2%
- Housing units
- 22,296
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 48439?
1,027 business establishments had a location in this ZIP code in 2023, 83 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance242
- Professional, scientific, and technical services123
- Finance and insurance109
- Retail trade107
- Accommodation and food services92
- Other services (except public administration)73
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 48439?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 48529 | Burton | 9,339 | $41k | 3.9 mi |
| 48519 | Burton | 8,096 | $64k | 4.7 mi |
| 48411 | Atlas | 56 | – | 5.3 mi |
| 48507 | Flint | 28,723 | $47k | 5.5 mi |
| 48438 | Goodrich | 7,591 | $107k | 7.5 mi |
| 48442 | Holly | 22,788 | $87k | 8.4 mi |
| 48473 | Swartz Creek | 22,339 | $78k | 9.7 mi |
| 48423 | Davison | 33,757 | $65k | 10.4 mi |
| 48451 | Linden | 16,097 | $100k | 12.1 mi |
| 48430 | Fenton | 39,309 | $100k | 12.3 mi |
| 48503 | Flint | 22,347 | $44k | 6.9 mi (near) |
| 48502 | Flint | 1,420 | $50k | 7.3 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 Grand Blanc?
1 more ZIP code carries the postal name Grand Blanc, MI 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 |
|---|---|
| 48480 | Genesee 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.