What city is 48820 in?

48820 is a Dewitt, MI mailing address. By land area, 4% lies inside DeWitt and 2% lies inside Wacousta; the rest is outside any Census-defined city or community.

What is the population of 48820?

About 18,357 people (±571), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,944.

What is the median household income in 48820?

$112,526 (±$7,162), 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 48820?

12 USPS carrier routes with 7,803 residential and 262 business mailboxes (8,065 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 48820?

The closest, measured center to center: 48906 (5.2 mi, Lansing), 48808 (7.5 mi, Bath), 48915 (8.6 mi, Lansing), 48822 (8.9 mi, Wacousta), 48912 (9.3 mi, Lansing) and 48933 (9.5 mi, Lansing).

48820 ZIP Code, Dewitt, MI

48820 is a ZIP code in Dewitt, Michigan in Clinton County. It covers 66 square miles of land. The closest ZIP codes are 48906, 48808 and 48915. 18,357 people live here in 7,058 households. With about 279 people per square mile it is lightly settled, and most homes are owner-occupied (86%). Median household income is $112,526, well above the Michigan median of $72,875.

Quick facts

Mailing city: Dewitt, MI
County: Clinton County
Land area: 66 sq mi
Population: 18,357
Median household income: $112,526
Carrier routes: 12 (7,803 homes)

Key figures

Measure	Value
Residents	18,357
Households	7,058
Median household income	$112,526
Income per person	$53,152
Median age	43.7
Homeowners	85.5%
Median home value	$337,100
Median rent	$1,159
Bachelor's degree or higher	47.4%
Average commute (minutes)	23.8
Households with kids under 18	33.0%
Moved in the past year	5.7%
Below the poverty line	4.6%
Broadband internet	93.9%
Speak a non-English language at home	3.1%

Household income

% of households	Value
<$10K	1.9%
$10–15K	0.8%
$15–25K	2.9%
$25–35K	6.7%
$35–50K	7.0%
$50–75K	13.0%
$75–100K	12.8%
$100–150K	21.6%
$150–200K	15.1%
$200K+	18.2%

Age

% of all residents	Value
<10	10.6%
10–19	13.8%
20–24	3.9%
25–34	10.8%
35–44	13.2%
45–54	14.0%
55–64	14.0%
65–74	11.7%
75+	7.9%

Tenure

% of housing units	Value
Owned, with mortgage	55.2%
Owned outright	28.9%
Rented	14.1%
Vacant	1.8%

Type of building

% of housing units	Value
Detached house	84.5%
Townhome	4.0%
2–4 units	2.0%
5–19 units	7.6%
20+ units	1.7%
Mobile / other	0.3%

Businesses in 48820

324 business establishments with 2,833 employees (ZIP Codes Business Patterns 2023).

Health Care and Social Assistance: 45
Construction: 44
Professional, Scientific, and Technical Services: 37
Other Services (except Public Administration): 35
Retail Trade: 33
Accommodation and Food Services: 30
Finance and Insurance: 29
Real Estate and Rental and Leasing: 28

EDDM carrier routes

48820 has 12 USPS carrier routes with 7,803 residential and 262 business mailboxes. Open the EDDM route map.

Carrier routes in 48820

48820 has 12 USPS carrier routes (12 rural (R)) with 7,803 residential and 262 business mailboxes. Routes range from 428 homes (R014) to 911 homes (R007); the median route has 652 homes. The Census counted 7,058 households in 48820 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	1
500–749	9
750–999	2
1,000–1,499	0
1,500+	0

Best routes in 48820 for…

Most businesses

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

Route R005 — USPS business mailboxes 87, 658 homes
Route R010 — USPS business mailboxes 65, 681 homes
Route R004 — USPS business mailboxes 37, 752 homes
Route R014 — USPS business mailboxes 33, 428 homes
Route R001 — USPS business mailboxes 18, 582 homes

Select these 5 routes on the route map

Every carrier route in 48820

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R001	Rural	582	18	$154,521	—	—	—
R002	Rural	590	2	$113,280	—	—	—
R003	Rural	650	0	$101,511	—	—	—
R004	Rural	752	37	$123,031	—	—	—
R005	Rural	658	87	$73,731	—	—	—
R006	Rural	531	5	$113,280	—	—	—
R007	Rural	911	5	$109,566	—	—	—
R008	Rural	737	3	$109,597	—	—	—
R009	Rural	629	0	$109,566	—	—	—
R010	Rural	681	65	$106,654	—	—	—
R011	Rural	654	7	$109,566	—	—	—
R014	Rural	428	33	$154,521	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 48820 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

48906 — Lansing city, MI (5.2 mi)
48808 — Bath CDP, MI (7.5 mi)
48915 — Lansing city, MI (8.6 mi)
48822 — Wacousta CDP, MI (8.9 mi)
48912 — Lansing city, MI (9.3 mi)
48933 — Lansing city, MI (9.5 mi)
48823 — East Lansing city, MI (9.6 mi)
48879 — St. Johns city, MI (9.9 mi)

Areas that include 48820

Where it ranks

Mail every home in 48820

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) 48820, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 48820 in?: 48820 is a Dewitt, MI mailing address. By land area, 4% lies inside DeWitt and 2% lies inside Wacousta; the rest is outside any Census-defined city or community.
What county is 48820 in?: 48820 is in Clinton County.
What is the population of 48820?: About 18,357 people (±571), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,944.
What is the median household income in 48820?: $112,526 (±$7,162), 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 48820?: 12 USPS carrier routes with 7,803 residential and 262 business mailboxes (8,065 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 48820?: The closest, measured center to center: 48906 (5.2 mi, Lansing), 48808 (7.5 mi, Bath), 48915 (8.6 mi, Lansing), 48822 (8.9 mi, Wacousta), 48912 (9.3 mi, Lansing) and 48933 (9.5 mi, Lansing).

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