Skip to main content
USAvizUSAviz

Local data snapshots and weekly insights for every place in America.

Explore

  • Insights
  • Search
  • Browse states
  • Browse metros

Company

  • About
  • Methodology
  • Sources
  • Embed Our Data
  • Contact
Privacy·Terms·Do Not Sell or Share

© 2026 USAviz.com. All rights reserved.

USAvizUSAviz
Insights
About
Home
50255
  1. Home
  2. ZIP Codes
  3. ZIP Code 50255
Iowa (IA)Keokuk County641

ZIP Code 50255 — Thornburg, IA

Keokuk County

Compare

51

Population

$39.7K

Median income

per household

7.8%

Poverty rate

What stands out

  • Median household income: $39.7K (bottom 10% vs US ZIP codes).
  • Poverty rate: 7.8%.

Categories vs U.S.

Economy

1 of 3 metrics better than U.S. benchmarks

Median household income

$39.7K

U.S.

$81K

Per-capita income

$28.9K

U.S.

$45K

Housing stress

Income distribution

Share of households by income bracket (ACS).

< $50k
53.9%
$50–100k
23.1%
$100–200k
23.1%
$200k+
0.0%

Connectivity

2 of 3 metrics better than U.S.

Best available speed

1,000Mbps

Gigabit speeds reported

100+ Mbps coverage

76.4%

U.S.

85.3%

Gigabit ready

17.2%

U.S.

8.6%

5G available

91.9%

U.S.

77.4%

Learning

Education metrics come from ACS 5-year estimates for ZIP Code Tabulation Areas (ZCTAs).

Bachelor's degree+ (age 25+)

34.8%

U.S.

35.7%

ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as noise.

School districts

Tri-County Community School District

Map

ZIP 50255

Thornburg, IA

Population

51

Area

0.2 sq mi

Density

267/sq mi

Neighbors

50136
More Details

Census Tracts

1 tracts overlap this ZIP. Hover over segments to explore.

100%

Tract 802

100%

Total tracts: 1Coverage: 100.0%

Representation

U.S. House

ZIP codes can span multiple congressional districts. Overlap percentages are approximate by land area. Verify by address.

100%

IA-1

100%

Districts: 1Coverage: 100.0%

Data freshness

ACS 5-Year
2020–2024
Broadband
2020-12
Mobile
2025-11-24
Page Updated
2026-02-23

Release schedule and upstream dates: Sources.

Data sources

US Census Bureau (ACS 5-year)HUD USPS ZIP crosswalkUS Census TIGER/Line (geometry inputs)US Census TIGER/Line (school districts)US Census Bureau (ZCTA-to-tract relationship, 2020)US Census Bureau (2020 ZCTA-to-congressional-district relationship file, CD119)FCC (Form 477 broadband)FCC (Mobile Broadband Data Collection)

Derived statistics

  • ZIP pages use Census ZIP Code Tabulation Areas (ZCTAs), not USPS delivery routes.
  • Population density is computed as population ÷ land area.
  • Overlap percentages (tracts and districts) are derived from map geometry and are approximate.

Data accuracy & methodology

ZIP pages combine 2020–2024 ACS 5-year ZCTA estimates with other public datasets when available (see Sources). Connectivity metrics use FCC coverage data, not ACS. ZIP-level estimates can have higher margins of error than county/state totals; treat small differences as statistical noise rather than precise changes.