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County ZIP codes · Iowa · FIPS 19161

Sac County, IA ZIP Codes

Sac County, Iowa has 15 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Sac County and 7 mainly in a neighboring county; 11 cross the county line. Median household income ranges from $71,579 in 51466 (Wall Lake) to $91,995 in 50535 (Early) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Sac County?

50535 · Early: $92k50540 · Fonda: $73k50561 · Lytton: $67k50567 · Nemaha: $78k50568 · Newell: $75k50583 · Sac City: $63k51020 · Galva: $80k51053 · Schaller: $73k51431 · Arthur: $54k51433 · Auburn: $68k51436 · Breda: $62k51448 · Kiron: $76k51450 · Lake View: $72k51458 · Odebolt: $86k51466 · Wall Lake: $72k50540505835145851436505685144851450510535053551020514665143350561514315056750535 · Early: $92k50540 · Fonda: $73k50561 · Lytton: $67k50567 · Nemaha: $78k50568 · Newell: $75k50583 · Sac City: $63k51020 · Galva: $80k51053 · Schaller: $73k51431 · Arthur: $54k51433 · Auburn: $68k51436 · Breda: $62k51448 · Kiron: $76k51450 · Lake View: $72k51458 · Odebolt: $86k51466 · Wall Lake: $72k50540505835145851436505685144851450510535053551020514665143350561514315056750535 · Early: $92k50540 · Fonda: $73k50561 · Lytton: $67k50567 · Nemaha: $78k50568 · Newell: $75k50583 · Sac City: $63k51020 · Galva: $80k51053 · Schaller: $73k51431 · Arthur: $54k51433 · Auburn: $68k51436 · Breda: $62k51448 · Kiron: $76k51450 · Lake View: $72k51458 · Odebolt: $86k51466 · Wall Lake: $72k505405058351458514365056851448514505105350535510205146651433505615143150567
The residential ZIP codes of Sac 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).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $71,875 and $75,250.

They carry 15 postal town names.

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

All 15 residential ZIP codes in Sac County

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

Residential ZIP codes mainly in Sac County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
50583 Sac City 2,288 20 $63k $145k 97%
51450 Lake View 1,619 29 $72k $185k 100%
51458 Odebolt 1,290 13 $86k $149k 100%
50535 Early 1,198 19 $92k $95k 100%
51466 Wall Lake 1,043 20 $72k $180k 99%
51053 Schaller 1,016 14 $73k $92k 89%
51433 Auburn 567 10 $68k $153k 58%
50567 Nemaha 280 9 $78k $170k 100%

Partly in Sac County

Residential ZIP codes mainly in another county that reach at least 1% into Sac County, by their share here
In this county
50561 Lytton 585 12 $67k $78k 42%
51448 Kiron 612 11 $76k $176k 20%
51436 Breda 815 13 $62k $222k 13%
51020 Galva 632 11 $80k $93k 13%
50568 Newell 1,384 17 $75k $138k 12%
51431 Arthur 430 11 $54k $80k 11%
50540 Fonda 998 9 $73k $110k 3%

Download the 15 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?

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

Share of each ZIP code's land in Sac County and in the neighboring counties
ZIPIn SacElsewhere
5058397%Calhoun County 3%
5056812%Buena Vista County 88%
5146699%Crawford County 1%
5105389%Ida County 11%
505403%Pocahontas County 72%; Calhoun County 25%
5143613%Carroll County 68%; Crawford County 18%
5102013%Ida County 71%; Cherokee County 12%; Buena Vista County 4%
5144820%Crawford County 62%; Ida County 18%
5056142%Calhoun County 58%
5143358%Calhoun County 42%
5143111%Ida County 89%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Sac County's ZIP codes use 3 prefixes: 505, 510 and 514.

Three-digit prefixes of Sac 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 Sac County's
PrefixSectional centerHereAll codes
505 Des Moines, IA (SCF 500) 6 75
510 Sioux Falls, SD (SCF 570) 2 55
514 Des Moines, IA (SCF 500) 7 32

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