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Zip Code 57401 — Aberdeen, SD

ZIP Code 57401 is associated with Aberdeen, SD, in Brown County. The listed population estimate is 31,939; estimated density is 44.2 people per square mile. Among records with population estimates, it ranks #1 of 13 in Brown County and #6 of 372 in SD.

Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (45.475300, -98.530420)

Data Metric	Local Statistic
Postal / Zip Code	57401
Primary City	Aberdeen
State / Province	SD
County	Brown
Total Population	31,939
Population Density	44.2 people/sq mi
Timezone	America/Chicago

How 57401 Compares

Metric	ZIP 57401	Brown County records	SD records
Population estimate	31,939	37,902 (sum)	906,188 (sum)
Population Density	44.2 /sq mi	--	--
County population rank	#1 of 13	--	--
State population rank	#6 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

Other ZIP Codes in Aberdeen (1 records)
Other ZIP Codes in Brown County (14 records)
Other ZIP Codes in South Dakota (375 records)

Nearby ZIP Codes in SD

ZIP Code	City	Distance	Population estimate
ZIP 57427	Bath	10.3 mi	384
ZIP 57479	Warner	12.6 mi	625
ZIP 57481	Westport	14.0 mi	271
ZIP 57433	Columbia	15.4 mi	318
ZIP 57460	Mansfield	15.4 mi	257

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 →