48138 ZIP Code, Grosse Ile, MI
48138 is a ZIP code in Grosse Ile, Michigan in Wayne County. It covers 8.6 square miles of land. The closest ZIP codes are 48183, 48193 and 48173. 10,344 people live here in 4,140 households. At about 1,202 people per square mile it has suburban density, and most homes are owner-occupied (92%). Median household income is $126,582, well above the Michigan median of $72,875; the median age is 50.4, older than most ZIP codes.
Quick facts
- Mailing city: Grosse Ile, MI
- County: Wayne County
- Land area: 8.6 sq mi
- Population: 10,344
- Median household income: $126,582
- Carrier routes: 10 (4,448 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 10,344 |
| Households | 4,140 |
| Median household income | $126,582 |
| Income per person | $63,863 |
| Median age | 50.4 |
| Homeowners | 91.9% |
| Median home value | $355,900 |
| Median rent | $1,414 |
| Bachelor's degree or higher | 50.2% |
| Average commute (minutes) | 30.8 |
| Households with kids under 18 | 22.8% |
| Moved in the past year | 7.8% |
| Below the poverty line | 4.1% |
| Broadband internet | 96.7% |
| Speak a non-English language at home | 8.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.6% |
| $10–15K | 1.0% |
| $15–25K | 3.3% |
| $25–35K | 3.2% |
| $35–50K | 4.3% |
| $50–75K | 11.0% |
| $75–100K | 13.4% |
| $100–150K | 22.3% |
| $150–200K | 11.7% |
| $200K+ | 27.3% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.0% |
| 10–19 | 10.2% |
| 20–24 | 3.1% |
| 25–34 | 9.4% |
| 35–44 | 11.5% |
| 45–54 | 10.9% |
| 55–64 | 15.2% |
| 65–74 | 17.3% |
| 75+ | 11.3% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 44.9% |
| Owned outright | 41.0% |
| Rented | 7.4% |
| Vacant | 6.6% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 84.5% |
| Townhome | 5.0% |
| 2–4 units | 3.3% |
| 5–19 units | 6.3% |
| 20+ units | 0.6% |
| Mobile / other | 0.1% |
Businesses in 48138
145 business establishments with 971 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 17
- Real Estate and Rental and Leasing: 15
- Administrative and Support and Waste Management and Remediation Services: 14
- Construction: 13
- Health Care and Social Assistance: 13
- Accommodation and Food Services: 13
- Other Services (except Public Administration): 12
- Retail Trade: 11
EDDM carrier routes
48138 has 10 USPS carrier routes with 4,448 residential and 101 business mailboxes. Open the EDDM route map.
Carrier routes in 48138
48138 has 10 USPS carrier routes (10 city (C)) with 4,448 residential and 101 business mailboxes. Routes range from 395 homes (C007) to 474 homes (C002); the median route has 444 homes. The Census counted 4,140 households in 48138 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 10 |
| 500–749 | 0 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 48138 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C003 — USPS business mailboxes 62, 442 homes
- Route C001 — USPS business mailboxes 21, 468 homes
- Route C004 — USPS business mailboxes 7, 445 homes
- Route C006 — USPS business mailboxes 5, 434 homes
- Route C002 — USPS business mailboxes 2, 474 homes
Select these 5 routes on the route map
Every carrier route in 48138
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 468 | 21 | $135,538 | — | — | — |
| C002 | City | 474 | 2 | $119,955 | — | — | — |
| C003 | City | 442 | 62 | $119,955 | — | — | — |
| C004 | City | 445 | 7 | $119,955 | — | — | — |
| C005 | City | 454 | 0 | $132,298 | — | — | — |
| C006 | City | 434 | 5 | $89,765 | — | — | — |
| C007 | City | 395 | 1 | $119,955 | — | — | — |
| C010 | City | 428 | 1 | $86,253 | — | — | — |
| C011 | City | 436 | 0 | $132,298 | — | — | — |
| C012 | City | 472 | 2 | $86,253 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 48138 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 48183 — Trenton city, MI (3.2 mi)
- 48193 — Riverview city, MI (4.1 mi)
- 48173 — Gibraltar city, MI (4.9 mi)
- 48192 — Wyandotte city, MI (5.5 mi)
- 48195 — Southgate city, MI (5.7 mi)
- 48134 — Flat Rock city, MI (7.4 mi)
- 48146 — Lincoln Park city, MI (7.8 mi)
- 48229 — Ecorse city, MI (8.2 mi)
Areas that include 48138
- Grosse Ile, MI ZIP codes — 1 ZIP code
- Wayne County ZIP codes — 70 ZIP codes
- Michigan ZIP code data
Where it ranks
- No. 4 of 67: highest median household income in Wayne County
- No. 9 of 67: highest median home value in Wayne County
- No. 2 of 67: highest share of owner-occupied homes in Wayne County
- No. 1 of 67: highest median age in Wayne County
Mail every home in 48138
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 48138, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 48138 in?
- 48138 is a Grosse Ile, MI mailing address. None of its land lies inside a Census-defined city or community.
- What county is 48138 in?
- 48138 is in Wayne County.
- What is the population of 48138?
- About 10,344 people (±361), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 10,788.
- What is the median household income in 48138?
- $126,582 (±$6,922), compared with $72,875 for Michigan as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 48138?
- 10 USPS carrier routes with 4,448 residential and 101 business mailboxes (4,551 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 48138?
- The closest, measured center to center: 48183 (3.2 mi, Trenton), 48193 (4.1 mi, Riverview), 48173 (4.9 mi, Gibraltar), 48192 (5.5 mi, Wyandotte), 48195 (5.7 mi, Southgate) and 48134 (7.4 mi, Flat Rock).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.