48708 ZIP Code, Bay City, MI

48708 is a ZIP code in Bay City, Michigan — mostly in Bay County (94% of its land), with smaller parts in Saginaw County. It covers 29 square miles of land. The closest ZIP codes are 48732, 48747 and 48706. 25,635 people live here in 11,364 households. With about 882 people per square mile it is lightly settled, and most homes are owner-occupied (70%). Median household income is $50,518, below the Michigan median of $72,875.

Quick facts

Key figures

MeasureValue
Residents25,635
Households11,364
Median household income$50,518
Income per person$30,952
Median age41.9
Homeowners70.1%
Median home value$107,700
Median rent$751
Bachelor's degree or higher17.8%
Average commute (minutes)23.6
Households with kids under 1822.9%
Moved in the past year10.4%
Below the poverty line18.3%
Broadband internet83.6%
Speak a non-English language at home4.4%

Household income

% of householdsValue
<$10K7.4%
$10–15K6.7%
$15–25K11.4%
$25–35K8.5%
$35–50K15.2%
$50–75K19.6%
$75–100K12.2%
$100–150K10.9%
$150–200K4.6%
$200K+3.5%

Age

% of all residentsValue
<109.4%
10–1911.7%
20–246.7%
25–3414.0%
35–4412.2%
45–5412.6%
55–6414.5%
65–7411.5%
75+7.4%

Tenure

% of housing unitsValue
Owned, with mortgage33.3%
Owned outright31.0%
Rented27.2%
Vacant8.6%

Type of building

% of housing unitsValue
Detached house74.6%
Townhome3.5%
2–4 units10.2%
5–19 units4.6%
20+ units6.6%
Mobile / other0.5%

Businesses in 48708

548 business establishments with 9,843 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

48708 has 21 USPS carrier routes with 12,013 residential and 850 business mailboxes. Open the EDDM route map.

Carrier routes in 48708

48708 has 21 USPS carrier routes (19 city (C), 2 rural (R)) with 12,013 residential and 850 business mailboxes. Routes range from 406 homes (C077) to 950 homes (C083); the median route has 512 homes. The Census counted 11,364 households in 48708 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4999
500–7497
750–9995
1,000–1,4990
1,500+0

Best routes in 48708 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route C059 — USPS business mailboxes 327, 775 homes
  2. Route C068 — USPS business mailboxes 104, 435 homes
  3. Route C072 — USPS business mailboxes 53, 602 homes
  4. Route C065 — USPS business mailboxes 47, 464 homes
  5. Route C070 — USPS business mailboxes 44, 791 homes

Select these 5 routes on the route map

Every carrier route in 48708

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C052City4719$37,492———
C053City52920$37,492———
C058City51224$39,394———
C059City775327$29,757———
C062City7519$36,989———
C063City53427$39,394———
C064City4918$55,256———
C065City46447$36,989———
C067City4761$55,256———
C068City435104$14,000———
C069City49024$72,710———
C070City79144$36,989———
C072City60253$55,256———
C073City5477$72,710———
C074City50915$29,757———
C077City40622$45,676———
C078City46036$29,757———
C081City4887$39,394———
C083City95023$29,757———
R002Rural57226$65,831———
R006Rural76017$71,291———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 48708 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

Areas that include 48708

Where it ranks

Mail every home in 48708

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) 48708, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 48708 in?
48708 is a Bay City, MI mailing address. By land area, 21% lies inside Bay City; the rest is outside any Census-defined city or community.
What county is 48708 in?
48708 is mostly in Bay County (94% of its land), with smaller parts in Saginaw County.
What is the population of 48708?
About 25,635 people (±800), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 25,860.
What is the median household income in 48708?
$50,518 (±$2,326), 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 48708?
21 USPS carrier routes with 12,013 residential and 850 business mailboxes (12,865 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 48708?
The closest, measured center to center: 48732 (4.9 mi, Essexville), 48747 (5 mi), 48706 (6.2 mi, Bay City), 48710 (6.9 mi), 48604 (7.2 mi, Zilwaukee) and 48724 (7.9 mi).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.