48858 ZIP Code, Mount Pleasant, MI

48858 is a ZIP code in Mount Pleasant, Michigan in Isabella County. It covers 174 square miles of land. The closest ZIP codes are 48859, 48878 and 48883. 42,226 people live here in 17,458 households, more than in 9 of every 10 Michigan ZIP codes. With about 242 people per square mile it is lightly settled, and owners and renters are mixed (50% own). Median household income is $51,267, below the Michigan median of $72,875; the median age is 27.6, younger than most ZIP codes.

Quick facts

Key figures

MeasureValue
Residents42,226
Households17,458
Median household income$51,267
Income per person$31,131
Median age27.6
Homeowners49.8%
Median home value$170,800
Median rent$913
Bachelor's degree or higher36.7%
Average commute (minutes)17.7
Households with kids under 1821.4%
Moved in the past year25.6%
Below the poverty line25.9%
Broadband internet80.4%
Speak a non-English language at home5.8%

Household income

% of householdsValue
<$10K8.9%
$10–15K6.3%
$15–25K10.2%
$25–35K10.4%
$35–50K13.0%
$50–75K16.8%
$75–100K12.0%
$100–150K12.9%
$150–200K4.4%
$200K+5.0%

Age

% of all residentsValue
<108.7%
10–1914.2%
20–2423.0%
25–3413.6%
35–4410.7%
45–548.9%
55–648.8%
65–747.5%
75+4.7%

Tenure

% of housing unitsValue
Owned, with mortgage27.8%
Owned outright17.7%
Rented45.0%
Vacant9.6%

Type of building

% of housing unitsValue
Detached house47.9%
Townhome5.1%
2–4 units9.7%
5–19 units19.5%
20+ units10.0%
Mobile / other7.9%

Businesses in 48858

1,127 business establishments with 19,712 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

48858 has 29 USPS carrier routes with 18,593 residential and 1,341 business mailboxes. Open the EDDM route map.

Carrier routes in 48858

48858 has 29 USPS carrier routes (15 city (C), 14 rural (R)) with 18,593 residential and 1,341 business mailboxes. Routes range from 154 homes (R016) to 1,571 homes (R014); the median route has 592 homes. The Census counted 17,458 households in 48858 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–4997
500–74914
750–9994
1,000–1,4992
1,500+1

Best routes in 48858 for…

Most businesses

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

  1. Route C003 — USPS business mailboxes 230, 387 homes
  2. Route C005 — USPS business mailboxes 162, 269 homes
  3. Route C008 — USPS business mailboxes 153, 292 homes
  4. Route C015 — USPS business mailboxes 103, 443 homes
  5. Route C006 — USPS business mailboxes 79, 325 homes

Select these 5 routes on the route map

Every carrier route in 48858

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C002City58913$49,452———
C003City387230$49,452———
C005City269162$84,514———
C006City32579$68,566———
C007City67930$31,797———
C008City292153$54,614———
C009City57634$77,782———
C010City7347$84,514———
C011City40822$54,614———
C012City7517$43,998———
C013City79116$65,950———
C015City443103$23,313———
C017City4509$68,566———
C019City1,39077$31,797———
C020City56313$70,504———
R001Rural61410$77,621———
R002Rural53112$96,354———
R003Rural5203$64,136———
R004Rural6263$55,623———
R005Rural63341$51,927———
R006Rural8155$75,738———
R007Rural62260$92,672———
R008Rural62034$51,927———
R009Rural59222$31,797———
R011Rural1,10872$26,584———
R012Rural57852$96,354———
R013Rural96262$41,695———
R014Rural1,57110$27,765———
R016Rural1540$77,782———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 48858 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 48858

Where it ranks

Mail every home in 48858

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) 48858, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 48858 in?
48858 is a Mount Pleasant, MI mailing address. By land area, 4% lies inside Mount Pleasant and 1% lies inside Beal City; the rest is outside any Census-defined city or community.
What county is 48858 in?
48858 is in Isabella County.
What is the population of 48858?
About 42,226 people (±528), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 41,844.
What is the median household income in 48858?
$51,267 (±$2,833), 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 48858?
29 USPS carrier routes with 18,593 residential and 1,341 business mailboxes (19,937 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 48858?
The closest, measured center to center: 48859 (2.3 mi, Mount Pleasant), 48878 (6.3 mi, Rosebush), 48883 (7.9 mi, Shepherd), 48896 (8.4 mi, Winn), 48893 (10.9 mi, Weidman) and 48832 (14.1 mi).

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