Residential delivery area · Michigan
ZIP Code 48170: Plymouth, MI
ZIP code 48170 uses the postal name Plymouth, Michigan and lies mostly in Wayne County (55% of its land) with the rest in Washtenaw County (Census 2020 ZIP-county file). About 40,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $114,278 (Census Bureau, ACS 2020-2024). By Census place, 6% of its land lies in Plymouth; 94% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Plymouth · its only residential ZIP
- County
- Wayne County (55%); Washtenaw County (45%)
- Census places
- Plymouth
- Metro area
- Detroit-Warren-Dearborn, MI
- House district
- MI-6 119th Congress
- State
- Michigan
- Time zone
- Eastern
- Land area
- 34.5 sq mi · 1,162 people per sq mi
Where is ZIP code 48170?
48170 centers on 42.368°, -83.534° and covers 34.5 square miles of land plus 0.2 of water. It borders 7 ZIP codes: 48168, 48187, 48198, 48150, 48178, 48154, 48105.
The map draws ZIP code areas only. For the streets inside 48170, 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 48170 compare with the rest of Wayne County?
| Measure | 48170 | In Wayne County | In MI |
|---|---|---|---|
| People (ACS 2020-2024) | 40,076 | 14th of 70 | 35th of 992 |
| Median household income | $114k | 8th of 67 | 43rd of 774 |
| Median home value | $418k | 4th of 64 | 38th of 779 |
Its median household income is higher than in 88% of U.S. residential ZIP codes, and it is denser than 80% 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 48170?
The 2020 Census counted 41,069 people in 48170; the ACS, which samples households over 2020-2024, estimates 40,076. Between the 2010 and 2020 censuses its population grew 2.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 40,076
- 2020 Census count
- 41,069+2.8% since 2010 (39,963)
- Households
- 17,308
- Median age
- 45.6
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 48170?
Of the 40,076 people the ACS estimates in 48170, 20.8% are under 18 and 22.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.7%).
- Under 1820.8%
- 18 to 6457.1%
- 65 and older22.1%
- White, not Hispanic85.7%
- Other or two or more4.5%
- Asian, not Hispanic4.3%
- Hispanic or Latino3.1%
- Black, not Hispanic2.4%
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 48170 earn?
Median household income is $114,278 (ACS 2020-2024), the 8th highest of the 67 ranked ZIP codes in Wayne County. It is not measurably different from 2015-2019 ($105,072 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $114,278
- Income per person
- $67,147
- Below the poverty line
- 4.3%
- Unemployed (of the labor force)
- 3.8%
- Adults 25+ with a bachelor's degree
- 60.1%
- Adjusted gross income per tax return, 2022
- $136,66322,090 returns; wages 62% 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 48170?
FHFA's house price index for 48170, built from repeat sales and appraisals of the same homes, rose 77% from 2015 to 2025 and rose 44% from 2020 to 2025, and moved +7.0% in 2025.
- Median home value (owners' estimate)
- $417,600
- Median gross rent
- $1,227
- Homes owned by their occupants
- 79.6%
- Housing units
- 18,143
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 48170?
1,614 business establishments had a location in this ZIP code in 2023, 27 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services273
- Health care and social assistance159
- Other services (except public administration)147
- Retail trade139
- Wholesale trade133
- Accommodation and food services119
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 48170?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 48168 | Northville | 25,038 | $188k | 2.6 mi |
| 48187 | Canton | 53,376 | $120k | 3.9 mi |
| 48198 | Ypsilanti | 39,244 | $63k | 6.9 mi |
| 48150 | Livonia | 26,687 | $98k | 8.0 mi |
| 48178 | South Lyon | 37,789 | $132k | 8.2 mi |
| 48154 | Livonia | 37,045 | $105k | 8.5 mi |
| 48105 | Ann Arbor | 37,048 | $95k | 8.7 mi |
| 48167 | Northville | 24,713 | $125k | 4.5 mi (near) |
| 48188 | Canton | 45,665 | $123k | 6.1 mi (near) |
| 48374 | Novi | 17,672 | $183k | 7.4 mi (near) |
| 48375 | Novi | 24,029 | $113k | 7.7 mi (near) |
| 48185 | Westland | 48,530 | $61k | 8.0 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.