Spencer, IA

Single-footprint Census roll-up for Spencer, IA: 1 USPS ZIP, population 12,691. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet SPENCER-IA · Spencer, IA 1 ZIPs · 12,691 pop · #16168/25278 · Clay County

INC-MID · RANK-LOWER · ABOVE-PEER · BOOK-ONE · OWN-MID · POP-TOWN · SPREAD-UNK · HOME-LOW

  • INC-MID $63,402
  • RANK-LOWER #16168/25278
  • ABOVE-PEER over Greenville
  • BOOK-ONE 1 ZIP
  • OWN-MID 70% owners
  • POP-TOWN 12,691
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $188,300

Nearest income peer: Greenville, IA ( $2,777 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Spencer

Lowest/highest poles plus county-sharing cities nearest Spencer on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Spencer, IA sits among US cities with a below-median household income, on a town-scale population base, across a single-ZIP footprint.

36th pct
household income vs 25,278 US cities
12,691
city population (Census)
1
USPS ZIP codes covered
$63,402
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

Below-median income with few delivery areas (1): read cost-of-living from the primary ZIP. Household income $63,402 and poverty 13.1% concentrate in 51301.

Owner-occupancy sits in a mixed band (70.3%) - check the ZIP page's tenure split before treating Spencer as a pure owner town.

Within Iowa, Ralston is the closest lower-income city and Ottumwa the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Spencer.

Population concentration

One ZIP, 51301, is all of Spencer

There is no split to weigh here: 51301 holds every one of Spencer's 12,691 ACS residents. City-level and ZIP-level numbers on this site are the same number twice, check the ZIP page for the income/tenure/commute breakdown.

Census ZBP business roll-up

Dense ZBP book packed into Spencer's one ZIP

Citywide ZBP: 483 establishments, 6,534 employees , annual payroll $304,818k (~38 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 51301 (483 units) ; leading NAICS Retail trade (88) · also Health care and social assistance · Construction .

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ZIP Codes in Spencer, IA

These ZIP codes sit in Clay County, which covers 8 ZIP codes in all; 1 of them fall in Spencer. See the Clay County roll-up →

Spencer sits in the lower half of Clay County on income: Royal, Peterson and Dickens report more, Everly and Greenville report less. Dickens marks the far end of that range at $110,833, 75% above Spencer.

ZIP Code Population Median income Establishments Density
51301 12,691 $63,402 483 31

Spencer roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Spencer, .