PlainZIP

Plymouth, WA

Single-footprint Census roll-up for Plymouth, WA: 1 USPS ZIP, population 352. 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 PLYMOUTH-WA · Plymouth, WA 1 ZIPs · 352 pop · #21500/25278 · Benton County

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

  • INC-MID $50,865
  • RANK-BOTTOM #21500/25278
  • BELOW-PEER under Prosser
  • BOOK-ONE 1 ZIP
  • OWN-HIGH 95% owners
  • POP-VILLAGE 352
  • SPREAD-UNK Single-ZIP book
  • HOME-MID $209,200

Nearest income peer: Prosser, WA (+ $30,149 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 Plymouth

Lowest/highest poles plus county-sharing cities nearest Plymouth 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, Plymouth, WA 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.

15th pct
household income vs 25,278 US cities
352
city population (Census)
1
USPS ZIP codes covered
$50,865
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 ($50,865 average) · poverty 8.6%. The primary code (99346) carries the ACS household fields that matter.

Owner-occupancy here runs high (94.7%) - tenure is stable enough that the ZIP detail's owner share is the right next click, not a renter-heavy compare.

Within Washington, Inchelium is the closest lower-income city and South Bend the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Plymouth.

Population concentration

One ZIP, 99346, is all of Plymouth

There is no split to weigh here: 99346 holds every one of Plymouth's 352 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

Mid-pack ZBP load on Plymouth's one ZIP

Citywide ZBP: 7 establishments, 114 employees , annual payroll $11,186k (~20 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 99346 (7 units) ; leading NAICS Wholesale trade (3) .

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ZIP Codes in Plymouth, WA

These ZIP codes sit in Benton County, which covers 10 ZIP codes in all; 1 of them fall in Plymouth. See the Benton County roll-up →

Every one of the 6 cities sharing Benton County reports a higher average ZIP median income than Plymouth, Kennewick, Richland and West Richland among them. That gap is the county's income spread, not a measure of the housing or commute picture below. West Richland marks the far end of that range at $121,845, 140% above Plymouth.

ZIP Code Population Median income Establishments Density
99346 352 $50,865 7 1
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Plymouth 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 Plymouth, .