Zip Code 52140 — Dorchester, IA

ZIP Code 52140 is associated with Dorchester, IA, in Allamakee County. The listed population estimate is 671; estimated density is 3.5 people per square mile. Among records with population estimates, it ranks #7 of 8 in Allamakee County and #602 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (43.441730, -91.531080)

Data MetricLocal Statistic
Postal / Zip Code52140
Primary CityDorchester
State / ProvinceIA
CountyAllamakee
Total Population671
Population Density3.5 people/sq mi
TimezoneAmerica/Chicago

How 52140 Compares

MetricZIP 52140Allamakee County recordsIA records
Population estimate67116,701 (sum)3,210,984 (sum)
Population Density3.5 /sq mi----
County population rank#7 of 8----
State population rank#602 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 52160New Albin9.1 mi818
ZIP 52172Waukon12.0 mi5,877
ZIP 52101Decorah13.1 mi12,706
ZIP 52151Lansing14.2 mi1,886
ZIP 52170Waterville18.6 mi555

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 →