ZIP Code 51637 in College Springs, IA

Data Last Updated: February 1, 2026
City:College Springs, Iowa
City Alias:College Sprgs
County:Page County
Timezone:Central (GMT -06:00)
Local Time:7:17:08 AM
Population:173 [See All]
Area Code:712
Classification:PO Box
Coordinates:40.6083, -95.1179
Land Area:1.252 sq mi
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51637 - College Springs, IA

ZIP Code 51637, College Springs

Retirement
LocationPage County, IA
Area1.3 sq mi
Population173
Households78
PO Boxes86 (110% adoption)
Median Age51.5 years
ZIP CreatedBefore Oct 2004
Key Facts
  • This is a PO Box Only Zone, meaning there's no alternative mail delivery option across the service area
  • The post office maintains 86 PO Boxes for 78 households, showing it serves surrounding rural areas beyond the immediate village
  • Median age of 51.5 years indicates an older, established community with few children (only 6 residents under 18)
  • Street names like Iowa Avenue and Missouri Avenue reflect the town's position at Iowa's western border
  • With 98 transportation workers out of a small workforce, trucking and logistics appear central to the local economy

Community Overview

College Springs sits in the southwest corner of Iowa, just 1.3 square miles along the Missouri border in Page County. With 173 residents spread across 78 households, it's a quiet rural community where the median age of 51.5 years reflects an older, established population. Nearly everyone owns their home. Of the 80 total housing units, 71 are owner-occupied and just 7 are rentals.

PO Box Only Mail Service

This is a PO Box Only Zone. There's no alternative mail delivery option anywhere in the area. The post office maintains 86 PO Boxes serving the 78 local households plus surrounding rural addresses. That 1.10 adoption rate means the College Springs post office serves more than just the immediate village, reaching residents from the broader countryside who travel here for mail access.

Mail arrives by rural carrier route, covering 69 delivery points across streets named Iowa Avenue (13 addresses), Missouri Avenue (9 addresses), and smaller lanes like Spruce Street and Spring Street. Street names honor neighboring states and suggest the town's location at Iowa's western edge. Despite the rural carrier route designation, residents receive mail through PO Boxes rather than roadside delivery, which is typical for small Iowa communities without street addressing infrastructure.

Economic and Demographic Profile

The village shows modest economic characteristics. Median household income stands at $70,323, with a median home value of $73,500. About 31% of workers commute from home, a high rate that likely includes agricultural work and remote employment. The Census reports 33 agricultural workers and 98 transportation/warehousing workers, suggesting farming and trucking sustain the local economy. Educational attainment is lower than state averages, with just 22% holding bachelor's degrees.

Mailing to College Springs

All mail must be addressed to a PO Box:

PO Box [number]
College Springs, IA 51637

The abbreviated form "College Sprgs" is also recognized for mailing addresses.

Street Name Patterns

State Names Nature Names Local Landmarks

Street names honor neighboring states and natural features, typical of small Iowa village naming patterns.

Interactive charts load automatically as you scroll. Hover for data, click to explore trends, and use the menu to export.

Population & Demographics


ZIP Code 51637 has 173 residents and 78 households (average 2.22 persons per household). The median age is 51.5 years, significantly older than the state (38.6) and significantly older than the nation (38.8). The gender split is 52.6% male and 47.4% female, which is higher than the national male share (49.1%), making this a male-majority area. Largest groups are White (94.8%, much higher than the state average of 84.5% and well above the national average of 61.6%) and Hispanic or Latino (2.3%); Hispanic or Latino residents make up 2.3%, which is much lower than the national average (18.7%).

Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2024 American Community Survey (ACS) 5-Year Estimates.
2020 Population:173Source: Census DHC
2024 ACS Population Estimate:171Source: Census ACS
2026 ZC Population Estimate:0Source: ZIP-Codes.com
Population Density:138.2 people per sq mile
Average Income:$72,888Source: Census ACS
Households:78Source: Census DHC
Average House Value:$76,300Source: Census ACS
Persons Per Household:2.22Source: Census DHC
Average Family Size:2.72Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group201020112102201320142015201620172018201920202021202220232024
Census ACS Population Estimate--278250228212221194230224246249247215214171
Decennial Census214------------------173--------
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)


Median Age: 51.5

Male Median Age: 47.8

Female Median Age: 52.3

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male6124344721345964863
Female83342624247311136301
Total14157761096371182019101164
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:16495.91%
Black:00%
Hispanic:*42.34%
Asian:10.58%
American Indian:00%
Hawaiian:00%
Other:21.17%
Total:171100%
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Gender Breakdown


GenderCount%Median Age
Males:9152.60%47.8 years
Females:8247.40%52.3 years
Total:173100%51.5 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:171100.00%
Native, born in PR, Island Areas, or abroad:00.00%
Foreign born, naturalized U.S. citizen:00.00%
Foreign born, not a U.S. citizen:00.00%
Total Population:171100%
Total Native Population:171100.00%
Total Foreign-born Population:00.00%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment


In 2024, the Median household income is $72,888, which is well under the national median ($80,734), is up $42,263 (138.0%) since 2011 and above its 2019 pre-pandemic level by $36,846. Family households earn a median of $58,125 versus $73,017 for nonfamily households (a difference of $14,892). By gender, male median income is $55,708 and female is $36,875, which is much lower than the national female median ($55,274), with a current gap of $18,833 that has widened from 2011 to 2024. The labor-force participation rate is 70.3%, which is well above the national rate (63.5%). The unemployment rate is 2.9%, which is considerably lower than the national rate (5.2%). The largest occupation group is Natural resources (33.7%).

Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

Median Income Over Time (Household, Family, Nonfamily, Male, Female)


Income Type20112012201320142015201620172018201920202021202220232024
Median Household Income$30,625$31,250$30,972$31,528$31,607$27,500$33,333$36,023$36,042$39,167$0$67,734$70,323$72,888
Median Family Income$34,500$34,750$34,286$35,625$36,000$35,500$39,375$38,542$39,167$38,750$39,792$45,000$73,000$58,125
Median NonFamily Income$27,875$23,750$23,125$28,750$28,750$20,000$21,406$23,125$24,375$50,000$62,621$67,969$70,081$73,017
Median Male Income$28,438$30,000$24,500$30,313$35,417$38,125$38,125$45,536$46,250$45,938$48,536$51,103$53,485$55,708
Median Female Income$32,500$36,250$38,125$31,964$31,964$66,250$50,625$27,222$50,313$0$0$31,875$48,611$36,875
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:10168.24%
Unemployed:32.03%
Not In Labor Force:4429.73%
Total:148100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment by Occupation (Civilian Employed Population, 16 and Over)


Management, business, science, and arts:2625.74%
Service:76.93%
Sales and Office:1918.81%
Natural resources, construction, and maintenance:3433.66%
Production, transportation, and material moving:1514.85%
Total Civilian Employed Population:101100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2024, the median home value is $76,300, which is considerably lower than the national median ($332,700), is up $29,900 (64.44%) since 2011 and above its 2019 pre-pandemic level by $21,300. The median gross rent is $0, which is well under the national median ($1,413), is down $592 (100.00%) since 2011 and below its 2019 pre-pandemic level by $495. Of occupied housing, owners make up 96.30% (57.69% with a mortgage, 42.31% free-and-clear) and renters 3.70% - making this ZIP Code under national rental averages. Insufficient data for vacancy rate.

Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Home Value Over Time


Group20112102201320142015201620172018201920202021202220232024
Median Home Value$46,400$40,700$37,500$38,100$43,000$40,000$43,800$54,600$55,000$60,300$60,400$71,900$73,500$76,300
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:133.33%
$500 to $999:00.00%
$1,000 to $1,499:266.67%
$1,500 to $1,999:00.00%
$2,000 to $2,499:00.00%
$2,500 to $2,999:00.00%
$3,000 or more:00.00%
No Rent:00.00%
Total:3100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group20112102201320142015201620172018201920202021202220232024
Median Rent$592$595$589$608$613$0$0$492$495$494$688$742$0$0
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):4555.56%
Owner Occupied (free and clear, no mortgage):3340.74%
Renter Occupied:33.70%
Total Occupied Housing Units:81100%

Occupied Housing Units:8195.29%
Vacant Housing Units (not graphed):44.71%
Total Housing Units:85100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Housing Type (Single-Family, Multi-Family, Other)


Single-Family Units:8397.65%
Multi-Family Units:00.00%
Other Units:22.35%
Total Housing Units:85100%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2024, 20.10% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.70%). High school or higher is 95.10%, which is comparable to the national rate (89.60%). The uninsured rate is 26.90%, which is comparable to the national rate (8.40%). The share of people in poverty is 8.60%, which is comparable to the national rate (8.80%), down 12.60 percentage points since 2011 and below its 2019 pre-pandemic level by 2.50 percentage points. This points to a pronounced improvement in local conditions - rising incomes, firmer consumer demand, and a stronger tax base. Among residents ages 3+, the largest enrollment group is kindergarten (38.46%). College enrollment is 38.46%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.

Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment

Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:00.00%
9th to 12th grade, no diploma:74.86%
High school graduate (includes equivalency):6746.53%
Some college, no degree:2618.06%
Associate's degree:1510.42%
Bachelor's degree:2215.28%
Graduate or professional degree:74.86%
Total:144100%
High school or higher:13795.14%
Bachelor's degree or higher:2920.14%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Health Insurance Coverage by Type (Private, Public, Uninsured)


Private Insurance:9343.46%
Public Insurance:7535.05%
No Insurance:4621.50%
Total:214100%
Has Health Insurance:16878.50%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2024)


Group20112102201320142015201620172018201920202021202220232024
% of People in Poverty18.9%17.9%4.8%8.6%8.9%20.4%14.8%16.9%8.8%12.5%7.8%6.5%6.3%8.6%
Source: U.S. Census 2011-2024 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:00.00%
Kindergarten:538.46%
Elementary school (grades 1-8):323.08%
High school (grades 9-12):00.00%
College or graduate school:538.46%
Total:13100%
Early Childhood:538.46%
K-12 (Primary & Secondary School):861.54%
Source: U.S. Census 2020-2024 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 51637 is designated for PO Box delivery only; business establishment and employment data are not available.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:100Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:0Source: CBP
1st Quarter Payroll:$0Source: CBP
Annual Payroll:$0Source: CBP
# of Employees:0Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 51637 is located in Page County, Iowa, within the Metropolitan Statistical Area (CBSA ) and Iowa's 3rd Congressional District. This area has a population of 0 people, about 0.00% of whom live in ZIP Code 51637. It covers 1.252 sq mi of land and a water area of 0 sq mi.

CBSA Name:--Source: Census
CBSA Number:--Source: Census
CBSA Type:--Source: Census
CBSA Division:--Source: Census
CBSA Population:0Source: Census
MSA:Source: Census
Land Area:1.252 sq miSource: Census
Water Area:--Source: Census
Congressional District:03Source: USPS
Congressional Land Area:8789.62 sq miSource: Census
PMSA:Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:1915105Source: Census
Place Name:College Springs city; IowaSource: Census

Adjacent & Nearby ZIP Codes


51638 | | 51636

Schools in ZIP Code 51637


ZIP Code 51637 is in the South Page Community School District, which serves grades Pre-Kindergarten thru 12th. There are 2 public school(s) in this ZIP Code, and we have located 3 private school(s). It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

South Page Elementary School 606 Iowa Ave
College Springs, IA 51637
District: South Page Community School District
South Page Senior High School 606 Iowa Ave
College Springs, IA 51637
District: South Page Community School District
Clarinda Lutheran School 707 W Scidmore St
Clarinda, IA 51632
District: Private SchoolNearby
Horace Mann Laboratory School 800 University Dr
Maryville, MO 64468
District: Private SchoolNearby
Nwmsu Horace Mann Laboratory School 800 University Dr
Maryville, MO 64468
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 51637


Northwest Missouri State University 800 University Drive
Maryville, MO 64468-6001
Type: Post Secondary
Peru State College 600 Hoyt Street
Peru, NE 68421-0010
Type: Post Secondary
Conception Seminary College 37174 State Hwy V V
Conception, MO 64433-0502
Type: Post Secondary
Southwestern Community College 1501 West Townline Street
Creston, IA 50801
Type: Post Secondary
Highland Community College 606 W Main
Highland, KS 66035-4165
Type: Post Secondary
Life Chiropractic College West - Bellevue University 818 Bruin Blvd
Bellevue, NE 68005
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.

  1. U.S. Postal Service [Last Updated: 2/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 2/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 2/1/2026], https://nces.ed.gov