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ZIP Code Database - Facts & Stats

Data Last Updated: April 1, 2023

Zip Code 51576, Underwood, IA

ZIP Code 51576 Details

Zip Code:51576
State:IA [Iowa]
Multi County:No
City Alias(es):Underwood
Area Code:712
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Central (GMT -06:00)
Observes Daylight Saving:Yes
Elevation:1216 ft
State FIPS:19
County FIPS:155
Division:West North Central
Intro Date:<2004-10

ZIP Code 51576 2010 Census Demographics

Current Population:1,903
2010 Population:2,110
Households per ZIP Code:748
Average House Value:$254,100
Avg. Income Per Household:$96,563
Persons Per Household:2.82
White Population:2,071
Black Population:17
Hispanic Population:45
Asian Population:14
American Indian Population:8
Hawaiian Population:0
Other Population:13
Male Population:1,063
Female Population:1,047
Median Age:38.00 years
Male Median Age:36.40 years
Female Median Age:39.20 years

ZIP Code 51576 Other Demographics

# Residential Mailboxes:675
# Business Mailboxes:5
Total Delivery Receptacles:895
Number of Businesses:34
1st Quarter Payroll:$4,910,000
Annual Payroll:$17,984,000
# of Employees:432
Water Area:0.207 sq mi
Land Area:46.336 sq mi
118th Congressional District:03
118th Congressional Land Area:8789.62 sq mi
Single Family Delivery Units:540
Multi Family Delivery Units:0
# Residential Mailboxes:675
# Business Mailboxes:5
Total Delivery Receptacles:895

ZIP Code 51576 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 340 335 -5
Retired Workers: 250 255 +5
Disabled Workers: 35 35 0
Widow(er)s and Parents: 20 15 -5
Spouses: 15 15 0
Children: 20 15 -5
65+: 270 270 0
Monthly Benefits - All: $471,000 $483,000 +$12,000
Monthly Benefits - Retired Workers: $363,000 $382,000 +$19,000
Monthly Benefits - Widow(ers): $28,000 $30,000 +$2,000

ZIP Code 51576 Statistical Areas

CBSA: 36540
CBSA Name: Omaha-Council Bluffs, NE-IA
CBSA Type: Metro
CBSA Division: 
CBSA Division Name: 
CBSA Population:865,350
CBSA Division Population:0
MSA: 5920
MSA Name: Omaha, NE-IA MSA
PMSA Name: 
City State Key:W11631
Preferred Last Line Key:W11631
51575: Previous ZIP Code
Next ZIP Code: 51577


  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],