Plymouth
Source:
Iowa
Plymouth is a sparsely populated county in Iowa with 8 ZIP codes, 23,746 people, and upper-quartile household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
National county placement
According to ACS 5-Year Estimates, Plymouth, IA sits among US counties with an upper-quartile household income, on a sparsely populated county population base, across a compact ZIP cluster.
- Top 19%
- household income vs 3,210 US counties
- 23,746
- combined ZIP population
- 8
- USPS ZIP codes covered
- $82,506
- avg ZIP median income
Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.
Plymouth lands in the national county income distribution as upper-quartile household income on sparsely populated county footing (FIPS 19149, 8 ZIPs, combined population 23,746). Sort the ZIP table by population before treating the county mean as uniform.
Upper-income footing across a mid-size ZIP set (8 codes). Sibling delivery areas are close enough that a two-ZIP compare usually separates the county seat from outlying tracts without leaving Plymouth. Use the density column to spot the urban core before jumping to HUD/FBI county overlays.
Save two ZIPs from the table into your shortlist, then open a compare link - that is the return path a static county summary cannot replace. All figures here come from Census ACS 2023 5-Year Estimates and USPS ZCTA files.
8
Total ZIPs
23,746
Total Population
ZIP Codes in Plymouth
Side-by-side: Compare 51031 vs 51050 →
Frequently Asked Questions
What is the population of Plymouth?
Plymouth has a total population of 23,746 across 8 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in Plymouth?
Plymouth includes 8 ZIP codes: 51031, 51050, 51001, 51024, 51028, 51038, 51062, 51008.