Home > MI > St. Clair County > Marysville > Zip 48040

Zip Code 48040 — Marysville, MI

48040 is a ZIP Code associated with Marysville, MI, located within St. Clair. 48040 ranks #5 out of 21 ZIP codes in St. Clair County by population (and #330 out of 992 in MI). The area supports an estimated population of 9,925 residents across Data Pending housing units, with a population density of 554.4 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.909830, -82.480220)

Data Metric	Local Statistic
Postal / Zip Code	48040
Primary City	Marysville
State / Province	MI
County	St. Clair
Total Population	9,925
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	554.4 people/sq mi
Timezone	America/Detroit

How 48040 Compares

Metric	ZIP 48040	St. Clair County	MI State Average
Population	9,925	161,718 (Total)	10,077,716 (Total)
Average ZIP Income	Data Pending	N/A	N/A
Population Density	554.4 /sq mi	--	--
County Pop Rank	#5 of 21	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 48060	Port Huron	4.8 mi	39,342	N/A
Zip 48074	Smiths Creek	4.9 mi	9,624	N/A
Zip 48079	Saint Clair	5.0 mi	12,711	N/A
Zip 48049	North Street	10.0 mi	5,468	N/A
Zip 48054	East China	10.2 mi	7,188	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →