Zip Code 52568 — Martinsburg, IA

ZIP Code 52568 is associated with Martinsburg, IA, in Keokuk County. The listed population estimate is 80; estimated density is 117.9 people per square mile. Among records with population estimates, it ranks #12 of 14 in Keokuk County and #924 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.177900, -92.250770)

Data MetricLocal Statistic
Postal / Zip Code52568
Primary CityMartinsburg
State / ProvinceIA
CountyKeokuk
Total Population80
Population Density117.9 people/sq mi
TimezoneAmerica/Chicago

How 52568 Compares

MetricZIP 52568Keokuk County recordsIA records
Population estimate809,120 (sum)3,210,984 (sum)
Population Density117.9 /sq mi----
County population rank#12 of 14----
State population rank#924 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 52563Hedrick1.4 mi1,602
ZIP 52562Hayesville6.0 mi52
ZIP 52576Ollie7.6 mi371
ZIP 52580Packwood9.2 mi711
ZIP 52591Sigourney10.2 mi2,721

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 →