Zip Code 49045 — Decatur, MI

ZIP Code 49045 is associated with Decatur, MI, in Van Buren County. The listed population estimate is 5,321; estimated density is 23.8 people per square mile. Among records with population estimates, it ranks #8 of 13 in Van Buren County and #470 of 987 in MI.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.103800, -86.002190)

Data MetricLocal Statistic
Postal / Zip Code49045
Primary CityDecatur
State / ProvinceMI
CountyVan Buren
Total Population5,321
Population Density23.8 people/sq mi
TimezoneAmerica/Detroit

How 49045 Compares

MetricZIP 49045Van Buren County recordsMI records
Population estimate5,32181,232 (sum)10,077,716 (sum)
Population Density23.8 /sq mi----
County population rank#8 of 13----
State population rank#470 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 49064Lawrence8.4 mi3,635
ZIP 49065Lawton8.6 mi7,092
ZIP 49047Dowagiac9.2 mi14,858
ZIP 49057Hartford10.2 mi6,434
ZIP 49079Paw Paw10.5 mi13,414

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 →