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County ZIP codes · Nebraska · FIPS 31127

Nemaha County, NE ZIP Codes

Nemaha County, Nebraska has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 6 of the residential ones lie mainly in Nemaha County and 7 mainly in a neighboring county; 9 cross the county line.

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Nemaha County?

68305 · Auburn: $58k68320 · Brock: $44k68321 · Brownville: –68348 · Elk Creek: $72k68376 · Humboldt: $52k68378 · Johnson: $76k68379 · Julian: $41k68414 · Nemaha: $82k68421 · Peru: $62k68437 · Shubert: $44k68442 · Stella: $65k68447 · Table Rock: $64k68448 · Talmage: $75k68376683056834868447684216844868378684376832068442684146832168305 · Auburn: $58k68320 · Brock: $44k68321 · Brownville: –68348 · Elk Creek: $72k68376 · Humboldt: $52k68378 · Johnson: $76k68379 · Julian: $41k68414 · Nemaha: $82k68421 · Peru: $62k68437 · Shubert: $44k68442 · Stella: $65k68447 · Table Rock: $64k68448 · Talmage: $75k68376683056834868447684216844868378684376832068442684146832168305 · Auburn: $58k68320 · Brock: $44k68321 · Brownville: –68348 · Elk Creek: $72k68376 · Humboldt: $52k68378 · Johnson: $76k68379 · Julian: $41k68414 · Nemaha: $82k68421 · Peru: $62k68437 · Shubert: $44k68442 · Stella: $65k68447 · Table Rock: $64k68448 · Talmage: $75k683766830568348684476842168448683786843768320684426841468321
The residential ZIP codes of Nemaha County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

All 13 residential ZIP codes in Nemaha County

6 ZIP codes lie mainly in Nemaha County; 7 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Nemaha County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
68305 Auburn 4,351 30 $58k $125k 100%
68421 Peru 987 20 $62k $114k 94%
68378 Johnson 677 12 $76k $173k 85%
68321 Brownville 480 18 – $310k 100%
68320 Brock 348 6 $44k $123k 100%
68414 Nemaha 102 3 $82k $67k 100%

Partly in Nemaha County

Residential ZIP codes mainly in another county that reach at least 1% into Nemaha County, by their share here
In this county
68437 Shubert 247 5 $44k $64k 38%
68442 Stella 211 6 $65k $127k 20%
68348 Elk Creek 341 8 $72k – 11%
68448 Talmage 225 5 $75k $116k 11%
68376 Humboldt 1,239 8 $52k $99k 10%
68379 Julian 42 34 $41k – 7%
68447 Table Rock 520 10 $64k $74k 7%

Download the 13 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

9 ZIP codes of Nemaha County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Nemaha County and in the neighboring counties
ZIPIn NemahaElsewhere
6837610%Richardson County 82%; Pawnee County 7%
6842194%Otoe County 6%
6837885%Johnson County 15%
684477%Pawnee County 89%; Johnson County 4%
6834811%Johnson County 75%; Pawnee County 13%
6843738%Richardson County 62%
6844811%Otoe County 81%; Johnson County 9%
6844220%Richardson County 80%
683797%Otoe County 93%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Nemaha County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Nemaha County's ZIP codes use 2 prefixes: 683 and 684.

Three-digit prefixes of Nemaha County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Nemaha County's
PrefixSectional centerHereAll codes
683 Lincoln, NE (SCF 683) 7 70
684 Lincoln, NE (SCF 683) 6 56

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.