Zip Code 50666 — Plainfield, IA

ZIP Code 50666 is associated with Plainfield, IA, in Bremer County. The listed population estimate is 753; estimated density is 5.9 people per square mile. Among records with population estimates, it ranks #7 of 8 in Bremer County and #554 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.859950, -92.509330)

Data MetricLocal Statistic
Postal / Zip Code50666
Primary CityPlainfield
State / ProvinceIA
CountyBremer
Total Population753
Population Density5.9 people/sq mi
TimezoneAmerica/Chicago

How 50666 Compares

MetricZIP 50666Bremer County recordsIA records
Population estimate75325,857 (sum)3,210,984 (sum)
Population Density5.9 /sq mi----
County population rank#7 of 8----
State population rank#554 of 969----

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 IA

ZIP CodeCityDistancePopulation estimate
ZIP 50658Nashua6.4 mi2,450
ZIP 50677Waverly7.6 mi12,673
ZIP 50619Clarksville8.9 mi2,150
ZIP 50631Frederika10.2 mi225
ZIP 50645Ionia11.6 mi1,193

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 →