PlainZIP

Monmouth, IA

Single-footprint Census roll-up for Monmouth, IA: 1 USPS ZIP, population 397. 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 MONMOUTH-IA · Monmouth, IA 1 ZIPs · 397 pop · #19543/25278 · Jackson County

INC-MID · RANK-LOWER · BELOW-PEER · BOOK-ONE · OWN-HIGH · POP-VILLAGE · SPREAD-UNK · HOME-LOW

  • INC-MID $56,250
  • RANK-LOWER #19543/25278
  • BELOW-PEER under Baldwin
  • BOOK-ONE 1 ZIP
  • OWN-HIGH 88% owners
  • POP-VILLAGE 397
  • SPREAD-UNK Single-ZIP book
  • HOME-LOW $155,400

Nearest income peer: Baldwin, IA (+ $3,000 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 Monmouth

Lowest/highest poles plus county-sharing cities nearest Monmouth 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, Monmouth, IA sits among US cities with one of the lowest household incomes among US cities, on a village-scale population base, across a single-ZIP footprint.

23rd pct
household income vs 25,278 US cities
397
city population (Census)
1
USPS ZIP codes covered
$56,250
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.

Lower-income footing on only 1 ZIP ($56,250 average) · poverty 13.5%. The primary code (52309) carries the ACS household fields that matter.

Owner-occupancy here runs high (87.9%) - tenure is stable enough that the ZIP detail's owner share is the right next click, not a renter-heavy compare.

Within Iowa, Cumberland is the closest lower-income city and Gilmore City the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Monmouth.

Population concentration

Monmouth's single ZIP 52309 carries the town

Monmouth is published as a single USPS ZIP. Code 52309 is the entire residential footprint (397 ACS residents), so the city page and the ZIP page tell the same household story, open that ZIP for income, tenure, and commute detail.

Census ZBP business roll-up

Sparse ZBP book inside single-ZIP Monmouth

Citywide ZBP: 4 establishments, 18 employees , annual payroll $867k (~10 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 52309 (4 units) .

View your shortlist →

ZIP Codes in Monmouth, IA

These ZIP codes sit in Jackson County, which covers 11 ZIP codes in all; 1 of them fall in Monmouth. See the Jackson County roll-up →

Every one of the 10 cities sharing Jackson County reports a higher average ZIP median income than Monmouth, Maquoketa, Bellevue and Preston among them. That gap is the county's income spread, not a measure of the housing or commute picture below. La Motte marks the far end of that range at $103,819, 85% above Monmouth.

ZIP Code Population Median income Establishments Density
52309 397 $56,250 4 5
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Monmouth 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 Monmouth, .