Residential delivery area · Michigan
ZIP Code 48418: Byron, MI
ZIP code 48418 uses the postal name Byron, Michigan and lies mostly in Shiawassee County (66% of its land), reaching into Genesee County and Livingston County (Census 2020 ZIP-county file). About 4,500 people live there (Census Bureau, ACS 2020-2024). Median household income is $74,547 (Census Bureau, ACS 2020-2024). By Census place, 2% of its land lies in Byron; 98% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Byron · its only residential ZIP
- County
- Shiawassee County (66%); Genesee County (25%); Livingston County (9%)
- Census places
- Byron
- Micro area
- Owosso, MI
- House districts
- MI-7 (81%), MI-8 (19%) 119th Congress, by share of land
- State
- Michigan
- Time zone
- Eastern
- Land area
- 41.0 sq mi · 109 people per sq mi
Where is ZIP code 48418?
48418 centers on 42.794°, -83.970° and covers 41.0 square miles of land plus 0.8 of water. It borders 8 ZIP codes: 48414, 48436, 48429, 48451, 48855, 48857, 48836, 48872.
The map draws ZIP code areas only. For the streets inside 48418, 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 48418 compare with the rest of Shiawassee County?
| Measure | 48418 | In Shiawassee County | In MI |
|---|---|---|---|
| People (ACS 2020-2024) | 4,484 | 10th of 19 | 500th of 992 |
| Median household income | $75k | 7th of 16 | 323rd of 774 |
| Median home value | $255k | 4th of 17 | 241st of 779 |
Its median household income is higher than in 54% of U.S. residential ZIP codes, and it is denser than 55% 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 48418?
The 2020 Census counted 4,389 people in 48418; the ACS, which samples households over 2020-2024, estimates 4,484. Between the 2010 and 2020 censuses its population grew 1.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 4,484±551 (90% margin)
- 2020 Census count
- 4,389+1.8% since 2010 (4,312)
- Households
- 1,741
- Median age
- 46.1
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 48418?
Of the 4,484 people the ACS estimates in 48418, 20.0% are under 18 and 20.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (94.2%).
- Under 1820.0%
- 18 to 6459.8%
- 65 and older20.3%
- White, not Hispanic94.2%
- Other or two or more4.6%
- Hispanic or Latino0.8%
- Asian, not Hispanic0.2%
- Black, not Hispanic0.2%
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 48418 earn?
Median household income is $74,547 (ACS 2020-2024), the 7th highest of the 16 ranked ZIP codes in Shiawassee County. It fell from $88,851 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $74,547±$8,365
- Income per person
- $38,708
- Below the poverty line
- 6.2%
- Unemployed (of the labor force)
- 2.6%
- Adults 25+ with a bachelor's degree
- 21.1%
- Adjusted gross income per tax return, 2022
- $68,6752,100 returns; wages 73% 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 48418?
FHFA's house price index for 48418, built from repeat sales and appraisals of the same homes, rose 100% from 2015 to 2025 and rose 43% from 2020 to 2025, and moved +3.7% in 2025.
- Median home value (owners' estimate)
- $255,000
- Median gross rent
- $1,464
- Homes owned by their occupants
- 93.9%
- Housing units
- 1,886
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 48418?
58 business establishments had a location in this ZIP code in 2023, 9 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction17
- Retail trade6
- Other services (except public administration)6
- Professional, scientific, and technical services5
- Information4
- Administrative and support and waste management and remediation services4
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 48418?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 48414 | Bancroft | 2,488 | $68k | 7.3 mi |
| 48436 | Gaines | 4,131 | $95k | 7.3 mi |
| 48429 | Durand | 8,241 | $68k | 7.7 mi |
| 48451 | Linden | 16,097 | $100k | 7.8 mi |
| 48855 | Howell | 16,668 | $108k | 8.6 mi |
| 48857 | Morrice | 3,206 | $76k | 9.9 mi |
| 48836 | Fowlerville | 15,089 | $91k | 10.2 mi |
| 48872 | Perry | 6,142 | $79k | 12.8 mi |
| 48816 | Cohoctah | 374 | $49k | 2.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.