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Zip Code 57548 — Lower Brule, SD

ZIP Code 57548 is associated with Lower Brule, SD, in Lyman County. The listed population estimate is 1,442; estimated density is 5.8 people per square mile. Among records with population estimates, it ranks #1 of 6 in Lyman County and #99 of 372 in SD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (44.084290, -99.623730)

Data MetricLocal Statistic
Postal / Zip Code57548
Primary CityLower Brule
State / ProvinceSD
CountyLyman
Total Population1,442
Population Density5.8 people/sq mi
TimezoneAmerica/Chicago

How 57548 Compares

MetricZIP 57548Lyman County recordsSD records
Population estimate1,4423,704 (sum)906,188 (sum)
Population Density5.8 /sq mi----
County population rank#1 of 6----
State population rank#99 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 57339Fort Thompson7.5 mi1,390
ZIP 57346Stephan14.0 mi13
ZIP 57569Reliance15.6 mi497
ZIP 57544Kennebec17.4 mi421
ZIP 57365Oacoma21.5 mi599

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 →