Zip Code Database List
Account Login
Find ZIP+4 of Address

Find the ZIP Code, County, and +4 of any U.S. Address

FREE ZIP Code Finder

Find info on any U.S. ZIP Code

Other FREE Lookups

Lookup ZIP Code of any City, State, County or Area Code

FREE Radius Search

Find all ZIP Codes

FREE Distance Calc

Calculate the distance between two U.S. or Canadian ZIP codes.

ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

Zip Code 51106, Sioux City, IA

ZIP Code 51106 Details

Zip Code:51106
City:Sioux City
State:IA [Iowa]
Multi County:No
City Alias(es):Sioux City
Area Code:712
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Central (GMT -06:00)
Observes Daylight Saving:Yes
Elevation:1161 ft
State FIPS:19
County FIPS:193
Division:West North Central
Intro Date:<2004-10

ZIP Code 51106 2010 Census Demographics

Current Population:29,190
2010 Population:26,544
Households per ZIP Code:10,483
Average House Value:$156,100
Avg. Income Per Household:$72,919
Persons Per Household:2.42
White Population:24,802
Black Population:550
Hispanic Population:1,924
Asian Population:459
American Indian Population:501
Hawaiian Population:31
Other Population:884
Male Population:12,848
Female Population:13,696
Median Age:34.80 years
Male Median Age:33.30 years
Female Median Age:36.40 years

ZIP Code 51106 Other Demographics

# Residential Mailboxes:12,062
# Business Mailboxes:808
Total Delivery Receptacles:12,959
Number of Businesses:718
1st Quarter Payroll:$104,957,000
Annual Payroll:$440,994,000
# of Employees:13,579
Water Area:0.431 sq mi
Land Area:33.493 sq mi
118th Congressional District:04
118th Congressional Land Area:22756.75 sq mi
Single Family Delivery Units:8,782
Multi Family Delivery Units:1,657
# Residential Mailboxes:12,062
# Business Mailboxes:808
Total Delivery Receptacles:12,959

ZIP Code 51106 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 5,490 5,485 -5
Retired Workers: 3,990 4,045 +55
Disabled Workers: 590 560 -30
Widow(er)s and Parents: 345 310 -35
Spouses: 145 150 +5
Children: 420 420 0
65+: 4,255 4,285 +30
Monthly Benefits - All: $7,551,000 $7,757,000 +$206,000
Monthly Benefits - Retired Workers: $5,945,000 $6,203,000 +$258,000
Monthly Benefits - Widow(ers): $510,000 $467,000 ($43,000)

ZIP Code 51106 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
51105: Previous ZIP Code
Next ZIP Code: 51108


  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],