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ZIP Code Database - Facts & Stats

Data Last Updated: April 1, 2023

Zip Code 51040, Onawa, IA

ZIP Code 51040 Details

Zip Code:51040
State:IA [Iowa]
Counties:MONONA, IA
Multi County:No
City Alias(es):Onawa
Area Code:712
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Central (GMT -06:00)
Observes Daylight Saving:Yes
Elevation:1036 ft
State FIPS:19
County FIPS:133
Division:West North Central
Intro Date:<2004-10

ZIP Code 51040 2010 Census Demographics

Current Population:3,485
2010 Population:3,712
Households per ZIP Code:1,644
Average House Value:$104,700
Avg. Income Per Household:$51,036
Persons Per Household:2.22
White Population:3,618
Black Population:33
Hispanic Population:40
Asian Population:23
American Indian Population:69
Hawaiian Population:6
Other Population:5
Male Population:1,799
Female Population:1,913
Median Age:45.70 years
Male Median Age:44.20 years
Female Median Age:47.10 years

ZIP Code 51040 Other Demographics

# Residential Mailboxes:1,570
# Business Mailboxes:126
Total Delivery Receptacles:1,954
Number of Businesses:107
1st Quarter Payroll:$10,070,000
Annual Payroll:$41,873,000
# of Employees:1,121
Water Area:1.614 sq mi
Land Area:129.511 sq mi
118th Congressional District:04
118th Congressional Land Area:22756.75 sq mi
Single Family Delivery Units:1,387
Multi Family Delivery Units:100
# Residential Mailboxes:1,570
# Business Mailboxes:126
Total Delivery Receptacles:1,954

ZIP Code 51040 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 985 980 -5
Retired Workers: 645 665 +20
Disabled Workers: 140 135 -5
Widow(er)s and Parents: 90 85 -5
Spouses: 30 25 -5
Children: 80 70 -10
65+: 750 735 -15
Monthly Benefits - All: $1,239,000 $1,262,000 +$23,000
Monthly Benefits - Retired Workers: $898,000 $939,000 +$41,000
Monthly Benefits - Widow(ers): $123,000 $115,000 ($8,000)

ZIP Code 51040 Statistical Areas

CBSA Name: 
CBSA Type: 
CBSA Division: 
CBSA Division Name: 
CBSA Population:0
CBSA Division Population:0
MSA Name: 
PMSA Name: 
City State Key:W11159
Preferred Last Line Key:W11159
51039: Previous ZIP Code
Next ZIP Code: 51041


  1. U.S. Postal Service [Last Updated: 4/1/2023],
  2. Internal Data Creation [Last Updated: 4/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census American National Standards Institute (ANSI) [Last Updated: 4/1/2023],
  6. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],