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zipcodes.pro — ZIP/52621

52621

ZIP 52621 is Crawfordsville, Iowa, mostly in Washington County; area code 319; Central time.

Type
Standard
Time zone
America/Chicago
County
Washington +1 more
Metro area
Iowa City, IA
Population
604
Coordinates
41.2085, -91.5338
☼ Live from 52621 — Crawfordsville, IA

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Local time: —

Where 52621 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 52621
  • 🔢 Type 52621 into a pocket calculator and turn it upside down: IZgZS — not quite a word, sorry.
  • ➕ As a number, 52,621 = 101 × 521. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100110110001101
  • 🏠 Its numerical neighbours: 52620 (Bonaparte, IA, 38 mi away) and 52623 (Danville, IA, 27 mi away).
  • 🔄 Backwards, 52621 becomes 12625, which is not a ZIP code at all.
  • 👥 29 other ZIP codes are made of exactly the same digits (12256, 12526, 15226, 15262, 15622, 16225, …). The farthest-flung twin is 12256 in Albany, NY, 918 miles away.
  • 🧭 Farther north than 68% of all ZIP codes, and farther west than 60%.
  • 🎯382 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 52621 and you would come out at 41.21°S, 88.47°E — 1,046 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 09m of daylight. Shortest: 9h 12m.
  • 📏 At 41.0 square miles of land, 52621 is bigger than 54% of ZIP codes — room for about 31 Central Parks.
🌙 The sky over 52621 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population604This ZIP604
Households219This ZIP219
Housing units241This ZIP241
Median age38.6This ZIP38.6Iowa38.6US 38.9
Median household income$87,188This ZIP$87,188Iowa$75,059US $80,734
Median home value$98,200This ZIP$98,200Iowa$208,000US $332,700
Median gross rent$1,292This ZIP$1,292Iowa$972US $1,413
Bachelor's degree or higher28.6%This ZIP28.6%
Mean commute26.8 minThis ZIP26.8 min
Population density14.7 / sq miThis ZIP14.7 / sq mi

Business and tax activity

Business establishments15This ZIP15
Employees44This ZIP44
Annual payroll$1,878,000This ZIP$1,878,000
Tax returns filed310This ZIP310
Total adjusted gross income$26,356,000This ZIP$26,356,000

Land area

Land area41.05 sq miThis ZIP41.05 sq mi
Water area0.04 sq miThis ZIP0.04 sq mi

Counties 52621 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Washington County 84.6%
Louisa County 15.4%

Other place names in 52621

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 52621

ZIPCityDistance
52647 Olds, IA 5.2 mi
52659 Winfield, IA 7.3 mi
52652 Swedesburg, IA 7.7 mi
52201 Ainsworth, IA 8.4 mi
52654 Wayland, IA 8.6 mi
52737 Columbus City, IA 9.0 mi
52738 Columbus Junction, IA 9.3 mi
52353 Washington, IA 11.3 mi
52644 Mount Union, IA 13.2 mi
52739 Conesville, IA 14.3 mi

Find every ZIP code within 10 miles of 52621 →

Questions about this ZIP code

Where is ZIP code 52621?

52621 is in Crawfordsville, Iowa, in Washington County, part of the Iowa City, IA metropolitan area. Its published point location is 41.2085, -91.5338.

What county is 52621 in?

52621 spans 2 counties: Washington County and Louisa County. Most of it falls in Washington County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 52621?

Crawfordsville uses area code 319, from NANPA's telephone records.

What time zone is 52621 in?

52621 uses America/Chicago.

How many people live in 52621?

About 604 people live in ZIP code 52621, in 219 households, at 14.7 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 52621?

$87,188 a year, against $75,059 across Iowa.

What ZIP codes are near 52621?

The closest are 52647 (5.2 mi), 52659 (7.3 mi), 52652 (7.7 mi), 52201 (8.4 mi) and 52654 (8.6 mi).

Is 52621 a PO Box ZIP code?

52621 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “52621 ZIP Code — Crawfordsville, Iowa (Washington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/52621

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/52621.json

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