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Zip Code 57420 — Akaska, SD

ZIP Code 57420 is associated with Akaska, SD, in Walworth County. The listed population estimate is 260; estimated density is 2.3 people per square mile. Among records with population estimates, it ranks #3 of 4 in Walworth County and #277 of 372 in SD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (45.285200, -100.143190)

Data MetricLocal Statistic
Postal / Zip Code57420
Primary CityAkaska
State / ProvinceSD
CountyWalworth
Total Population260
Population Density2.3 people/sq mi
TimezoneAmerica/Chicago

How 57420 Compares

MetricZIP 57420Walworth County recordsSD records
Population estimate2601,925 (sum)906,188 (sum)
Population Density2.3 /sq mi----
County population rank#3 of 4----
State population rank#277 of 372----

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 SD

ZIP CodeCityDistancePopulation estimate
ZIP 57472Selby10.1 mi1,165
ZIP 57450Hoven15.6 mi624
ZIP 57442Gettysburg15.8 mi1,772
ZIP 57601Mobridge18.7 mi3,422
ZIP 57452Java21.3 mi136

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 →