Zip lookup · IA

51040
Onawa, Iowa.

Onawa, Monona County, IA · population 3,500

What it costs per month · 51040 $824/mo

to buy the typical home at today's mortgage rate — +$425 (+106%) since Jan 2020.

What the home itself did
1 year
Up $4,352 +3%
$152,697$157,049 since Sep 2025
5 years
Up $27,786 +21%
$129,263$157,049 since Sep 2021

Monthly payment to buy the typical home

Home value × that month's 30-year mortgage rate, 20% down, principal and interest. This is the line households feel: prices and rates compound each other.

$500 $1,000 $1,500 $2,000 2002 2006 2010 2014 2018 2022 2026 51040 $824 United States $1,922
$500 $1,000 $1,500 $2,000 2002 2010 2018 2026
  • 51040$824
  • United States$1,922

At the last five years' pace, a typical home here doubles in price every 18 years.

Typical home values in zip 51040 rose 2.8% over the past year — faster than the nation's +1.2%.

Zillow also publishes an index for the city itself: Onawa, IA — measured over the city limits, which is a different area from this zip.

Typical home value $157,049 as of Sep 2026
+2.8%year on year

Typical home value — 51040

Mid-tier homes, smoothed and seasonally adjusted.

$100,000 $200,000 $300,000 2018 2020 2022 2024 2026 51040 $157,049 United States $366,157
$100,000 $200,000 $300,000 2018 2022 2026
  • 51040$157,049
  • United States$366,157

Within 20 miles

Miles sorted ascending, activate to sort descending Zip activate to sort by Zip City activate to sort by City Population activate to sort by Population Rent activate to sort by Rent Home value activate to sort by Home value
8.2 51523 Blencoe 379 — $140,537
8.8 51010 Castana 425 — $201,100
9.1 51063 Whiting 1,072 — $181,872
10.3 68020 Decatur 644 — $147,907
13.0 51558 Moorhead 549 — $169,309
13.5 51545 Little Sioux 267 — $92,096
14.7 51572 Soldier 371 — $120,466
15.1 51026 Hornick 910 — $241,439
15.3 51056 Smithland 346 — $164,903
15.8 51055 Sloan 1,346 — $242,279
17.0 51034 Mapleton 1,674 — $172,170
17.2 51564 Pisgah 520 — $168,417
17.5 68061 Tekamah 2,268 — $204,460
19.1 51060 Ute 706 — $116,286
19.8 68038 Lyons 1,398 — $188,708

Coordinates and population from SimpleMaps US Zips (Basic). Rent and home values from Zillow Research.