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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

Zip Code 51101, Sioux City, IA

ZIP Code 51101 Details

Zip Code:51101
City:Sioux City
State:IA [Iowa]
Multi County:No
City Alias(es):Sioux City
City Alias(es) To Avoid Using:Wickham Spur
Area Code:712
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Central (GMT -06:00)
Observes Daylight Saving:Yes
Elevation:1102 ft
State FIPS:19
County FIPS:193
Division:West North Central
Intro Date:<2004-10

ZIP Code 51101 2010 Census Demographics

Current Population:1,228
2010 Population:809
Households per ZIP Code:454
Average House Value:$170,800
Avg. Income Per Household:$24,091
Persons Per Household:1.44
White Population:588
Black Population:74
Hispanic Population:167
Asian Population:11
American Indian Population:74
Hawaiian Population:0
Other Population:94
Male Population:441
Female Population:368
Median Age:41.60 years
Male Median Age:35.90 years
Female Median Age:49.90 years

ZIP Code 51101 Other Demographics

# Residential Mailboxes:853
# Business Mailboxes:630
Total Delivery Receptacles:1,474
Number of Businesses:431
1st Quarter Payroll:$117,303,000
Annual Payroll:$469,200,000
# of Employees:9,718
Water Area:0.023 sq mi
Land Area:1.203 sq mi
118th Congressional District:04
118th Congressional Land Area:22756.75 sq mi
Single Family Delivery Units:124
Multi Family Delivery Units:712
# Residential Mailboxes:853
# Business Mailboxes:630
Total Delivery Receptacles:1,474

ZIP Code 51101 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 575 575 0
Retired Workers: 195 200 +5
Disabled Workers: 245 250 +5
Widow(er)s and Parents: 30 30 0
Spouses: 5 5 0
Children: 100 90 -10
65+: 240 230 -10
Monthly Benefits - All: $545,000 $567,000 +$22,000
Monthly Benefits - Retired Workers: $215,000 $222,000 +$7,000
Monthly Benefits - Widow(ers): $32,000 $28,000 ($4,000)

ZIP Code 51101 Statistical Areas

CBSA: 43580
CBSA Name: Sioux City, IA-NE-SD
CBSA Type: Metro
CBSA Division: 
CBSA Division Name: 
CBSA Population:143,577
CBSA Division Population:0
MSA: 7720
MSA Name: Sioux City, IA-NE MSA
PMSA Name: 
City State Key:W11437
Preferred Last Line Key:W11437
51063: Previous ZIP Code
Next ZIP Code: 51102


  1. U.S. Postal Service [Last Updated: 3/1/2023],
  2. Internal Data Creation [Last Updated: 3/1/2023],
  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: 3/1/2023],
  6. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],