Residential delivery area · Michigan
ZIP Code 48821: Dimondale, MI
ZIP code 48821 uses the postal name Dimondale, Michigan and lies mostly in Eaton County (96% of its land) with the rest in Ingham County (Census 2020 ZIP-county file). About 6,300 people live there (Census Bureau, ACS 2020-2024). Median household income is $107,440 (Census Bureau, ACS 2020-2024). By Census place, 5% of its land lies in Dimondale; 96% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Dimondale · its only residential ZIP
- County
- Eaton County (96%); Ingham County (4%)
- Census places
- Dimondale
- Metro area
- Lansing-East Lansing, MI
- House district
- MI-7 119th Congress
- State
- Michigan
- Time zone
- Eastern
- Land area
- 19.9 sq mi · 318 people per sq mi
Where is ZIP code 48821?
48821 centers on 42.640°, -84.651° and covers 19.9 square miles of land plus 0.4 of water. It borders 7 ZIP codes: 48876, 48911, 48842, 48917, 48827, 48813, 48854.
The map draws ZIP code areas only. For the streets inside 48821, 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 48821 compare with the rest of Eaton County?
| Measure | 48821 | In Eaton County | In MI |
|---|---|---|---|
| People (ACS 2020-2024) | 6,327 | 8th of 19 | 423rd of 992 |
| Median household income | $107k | 1st of 19 | 65th of 774 |
| Median home value | $244k | 2nd of 19 | 262nd of 779 |
Its median household income is higher than in 85% of U.S. residential ZIP codes, and it is denser than 68% 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 48821?
The 2020 Census counted 5,987 people in 48821; the ACS, which samples households over 2020-2024, estimates 6,327. Between the 2010 and 2020 censuses its population grew 2.6% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 6,327
- 2020 Census count
- 5,987+2.6% since 2010 (5,836)
- Households
- 2,491
- Median age
- 45.9
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 48821?
Of the 6,327 people the ACS estimates in 48821, 17.8% are under 18 and 26.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (86.6%).
- Under 1817.8%
- 18 to 6456.1%
- 65 and older26.1%
- White, not Hispanic86.6%
- Hispanic or Latino6.3%
- Other or two or more3.7%
- Black, not Hispanic3.0%
- Asian, not Hispanic0.4%
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 48821 earn?
Median household income is $107,440 (ACS 2020-2024), the highest of the 19 ranked ZIP codes in Eaton County. It rose from $91,435 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $107,440±$11,202
- Income per person
- $47,345
- Below the poverty line
- 2.9%
- Unemployed (of the labor force)
- 3.4%
- Adults 25+ with a bachelor's degree
- 38.2%
- Adjusted gross income per tax return, 2022
- $82,0823,180 returns; wages 61% 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 48821?
FHFA's house price index for 48821, built from repeat sales and appraisals of the same homes, rose 87% from 2015 to 2025 and rose 44% from 2020 to 2025, and moved +7.8% in 2025.
- Median home value (owners' estimate)
- $244,000
- Median gross rent
- $1,065
- Homes owned by their occupants
- 94.3%
- Housing units
- 2,610
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 48821?
82 business establishments had a location in this ZIP code in 2023, the same count as in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction11
- Retail trade11
- Professional, scientific, and technical services11
- Accommodation and food services11
- Administrative and support and waste management and remediation services9
- Health care and social assistance6
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 48821?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 48876 | Potterville | 4,360 | $75k | 4.2 mi |
| 48911 | Lansing | 39,876 | $57k | 4.5 mi |
| 48842 | Holt | 21,945 | $88k | 5.7 mi |
| 48917 | Lansing | 32,483 | $71k | 5.9 mi |
| 48827 | Eaton Rapids | 15,831 | $78k | 9.1 mi |
| 48813 | Charlotte | 20,564 | $80k | 10.9 mi |
| 48854 | Mason | 19,529 | $95k | 10.9 mi |
| 48910 | Lansing | 32,800 | $55k | 7.5 mi (near) |
| 48933 | Lansing | 3,107 | $34k | 7.8 mi (near) |
| 48915 | Lansing | 9,428 | $55k | 8.0 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.