zipradar

Compare · NE · SD

ZIP 68102 vs ZIP 57104

Omaha, NE compared to Sioux Falls (East), SD on twelve public-records dimensions sourced from EPA, FEMA, USDA, FBI, NCES, and county records. Each cell links to the per-ZIP topic page where the source citation and refresh cadence live.

Last verified 2026-05-13 · methodology

ZIP 68102

Omaha, NE

Nebraska

Full dashboard →

ZIP 57104

Sioux Falls (East), SD

South Dakota

Full dashboard →

Side by side

Dimensions populate live as ingestion reaches each source. Every row will link to the primary regulator.

Nebraska context

Radon, agricultural water, tornadoes

Nebraska is uniformly Zone 1 radon. Ogallala aquifer + agricultural runoff create EPA SDWIS nitrate compliance pressure in many rural systems. Central Tornado Alley.

Nebraska state page →

South Dakota context

Radon Zone 1, agricultural water, tornadoes

South Dakota is uniformly Zone 1 radon. Agricultural runoff drives EPA SDWIS nitrate compliance pressure in small rural systems. Tornado risk peaks April-June.

South Dakota state page →

Read more on cross-ZIP comparisons

Editorial deep-dives that help when reading two places side-by-side — what each data layer actually proves, and what it doesn't.

More comparisons