Zip Code 48059 — Fort Gratiot, MI

ZIP Code 48059 is associated with Fort Gratiot, MI, in St. Clair County. The listed population estimate is 15,499; estimated density is 188.8 people per square mile. Among records with population estimates, it ranks #2 of 21 in St. Clair County and #250 of 987 in MI.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (43.082530, -82.499130)

Data MetricLocal Statistic
Postal / Zip Code48059
Primary CityFort Gratiot
State / ProvinceMI
CountySt. Clair
Total Population15,499
Population Density188.8 people/sq mi
TimezoneAmerica/Detroit

How 48059 Compares

MetricZIP 48059St. Clair County recordsMI records
Population estimate15,499161,718 (sum)10,077,716 (sum)
Population Density188.8 /sq mi----
County population rank#2 of 21----
State population rank#250 of 987----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in MI

ZIP CodeCityDistancePopulation estimate
ZIP 48049North Street5.0 mi5,468
ZIP 48032Jeddo5.9 mi1,871
ZIP 48060Port Huron7.4 mi39,342
ZIP 48074Smiths Creek9.8 mi9,624
ZIP 48006Avoca10.0 mi3,889

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 →