| City: | Dewar, Iowa |
| County: | Black Hawk County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 7:47:46 PM |
| Population: | 146 [See All] |
| Area Code: | 319 |
| Classification: | PO Box |
| Coordinates: | 42.5338, -92.2094 |
| Land Area: | 2.068 sq mi |
| Quick Link: |
Dewar is a small Iowa community of 146 residents in Black Hawk County, classified as a PO Box Only Zone. The post office maintains 59 PO Boxes for 61 households, a 97% adoption rate that reflects the lack of alternative mail delivery across this 1.83 square mile territory. Mail reaches residents through one rural carrier route (R001) serving the handful of homes along N Raymond Rd, 1st St, 2nd St, 3rd St, and other local streets.
This is an aging, established community. Median age: 50 years. The numbered street grid (1st, 2nd, 3rd) and historic housing stock tell the story of an early Iowa settlement. Census data shows 69 homes built before 1939, accounting for most of the town's 65 total housing units. Nearly all residents own their homes (97% homeownership), with a median value of $170,500.
Despite its small size, Dewar's economy stands out. Median household income is $92,132, well above typical rural averages. Transportation and warehousing employ 58 workers, an unusually high concentration for a village of this size. This suggests residents commute to nearby Waterloo (4 miles away) for logistics and manufacturing jobs. About 29% work from home, likely enabled by the proximity to larger employment centers.
Dewar sits at the edge of the Waterloo metro area, with nearby neighborhoods like Maywood and Cityview just 4-5 miles away. But postal geography keeps it separate. The PO Box Only Zone designation means there's no street delivery alternative. Residents pick up packages, prescriptions, and daily mail at the post office on a rural schedule.
All mail must use either a PO Box address or the rural route format:
Street grid with numbered streets (1st, 2nd, 3rd) typical of early Iowa town planning.
ZIP Code 50623 has 146 residents and 61 households (average 2.39 persons per household). The median age is 50.0 years, significantly older than the state (38.6) and significantly older than the nation (38.8). The gender split is 51.4% male and 48.6% female, which is slightly higher than the national male share (49.1%), making this a male-majority area. Largest groups are White (94.5%, much higher than the state average of 84.5% and well above the national average of 61.6%) and Hispanic or Latino (0.7%); Hispanic or Latino residents make up 0.7%, which is much lower than the national average (18.7%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 146Source: Census DHC |
| 2024 ACS Population Estimate: | 145Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 70.6 people per sq mile |
| Average Income: | $92,132Source: Census ACS |
| Households: | 61Source: Census DHC |
| Average House Value: | $170,500Source: Census ACS |
| Persons Per Household: | 2.39Source: Census DHC |
| Average Family Size: | 2.70Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 123 | 150 | 145 |
| Decennial Census | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 146 | -- | -- | -- |
Median Age: 50
Male Median Age: 51.8
Female Median Age: 38.5
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 3 | 2 | 2 | 3 | 1 | 6 | 1 | 5 | 7 | 4 | 9 | 13 | 0 | 15 | 2 | 2 | 0 | 0 |
| Female | 4 | 4 | 12 | 1 | 0 | 10 | 4 | 1 | 2 | 1 | 4 | 10 | 7 | 9 | 0 | 1 | 0 | 1 |
| Total | 7 | 6 | 14 | 4 | 1 | 16 | 5 | 6 | 9 | 5 | 13 | 23 | 7 | 24 | 2 | 3 | 0 | 1 |
| White: | 138 | 99.28% |
| Black: | 0 | 0% |
| Hispanic:* | 1 | 0.72% |
| Asian: | 0 | 0% |
| American Indian: | 0 | 0% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 139 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 75 | 51.37% | 51.8 years |
| Females: | 71 | 48.63% | 38.5 years |
| Total: | 146 | 100% | 50.0 years |
| Native, born in the United States: | 145 | 100.00% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0.00% |
| Foreign born, naturalized U.S. citizen: | 0 | 0.00% |
| Foreign born, not a U.S. citizen: | 0 | 0.00% |
| Total Population: | 145 | 100% |
| Total Native Population: | 145 | 100.00% |
| Total Foreign-born Population: | 0 | 0.00% |
In 2023, the Median household income is $92,132, which is much higher than the state median ($73,147), and above its 2019 pre-pandemic level by $92,132. Family households earn a median of $91,691 versus $0 for nonfamily households (a difference of $91,691). By gender, male median income is $72,083 and female is $36,250, which is much lower than the national female median ($53,445), with a current gap of $35,833 that has widened from 2011 to 2023. The labor-force participation rate is 45.7%, which is considerably lower than the state rate (66.5%). The unemployment rate is 0.0%, which is markedly below the national rate (5.2%). The largest occupation group is Management (34.5%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $82,778 | $84,063 | $92,132 |
| Median Family Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $79,583 | $82,813 | $91,691 |
| Median NonFamily Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Median Male Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $122,813 | $0 | $72,083 |
| Median Female Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $44,167 | $45,833 | $36,250 |
| Employed: | 58 | 45.67% |
| Unemployed: | 0 | 0.00% |
| Not In Labor Force: | 69 | 54.33% |
| Total: | 127 | 100% |
| Management, business, science, and arts: | 20 | 34.48% |
| Service: | 13 | 22.41% |
| Sales and Office: | 10 | 17.24% |
| Natural resources, construction, and maintenance: | 9 | 15.52% |
| Production, transportation, and material moving: | 6 | 10.34% |
| Total Civilian Employed Population: | 58 | 100% |
In 2023, the median home value is $170,500, which is much lower than the national median ($303,400), and above its 2019 pre-pandemic level by $170,500. The median gross rent is $0, which is far less than the state median ($949), and above its 2019 pre-pandemic level by $0. Of occupied housing, owners make up 100.00% (42.03% with a mortgage, 57.97% free-and-clear) and renters 0.00% - making this ZIP Code more home ownership than the state and under national rental averages. Insufficient data for vacancy rate.
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $165,600 | $170,500 |
| Less than $500: | 0 | 0% |
| $500 to $999: | 0 | 0% |
| $1,000 to $1,499: | 0 | 0% |
| $1,500 to $1,999: | 0 | 0% |
| $2,000 to $2,499: | 0 | 0% |
| $2,500 to $2,999: | 0 | 0% |
| $3,000 or more: | 0 | 0% |
| No Rent: | 0 | 0% |
| Total: | 0 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Owner Occupied (with mortgage): | 29 | 42.03% |
| Owner Occupied (free and clear, no mortgage): | 40 | 57.97% |
| Renter Occupied: | 0 | 0.00% |
| Total Occupied Housing Units: | 69 | 100% |
| Occupied Housing Units: | 69 | 100.00% |
| Vacant Housing Units (not graphed): | 0 | 0.00% |
| Total Housing Units: | 69 | 100% |
| Single-Family Units: | 69 | 100.00% |
| Multi-Family Units: | 0 | 0.00% |
| Other Units: | 0 | 0.00% |
| Total Housing Units: | 69 | 100% |
In 2023, 2.40% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.00%). High school or higher is 100.00%, which is comparable to the national rate (89.40%). The uninsured rate is 0.00%, which is comparable to the national rate (8.60%). Public coverage is 78.60%, which is far higher than the national rate (36.30%). The share of people in poverty is 0.00%, which is comparable to the national rate (8.70%). Poverty has been broadly stable, which may reflect structural barriers or offsetting gains and setbacks. Among residents ages 3+, the largest enrollment group is elementary (78.57%). College enrollment is 0.00%, 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
| Less than 9th grade: | 0 | 0.00% |
| 9th to 12th grade, no diploma: | 0 | 0.00% |
| High school graduate (includes equivalency): | 79 | 62.20% |
| Some college, no degree: | 36 | 28.35% |
| Associate's degree: | 9 | 7.09% |
| Bachelor's degree: | 3 | 2.36% |
| Graduate or professional degree: | 0 | 0.00% |
| Total: | 127 | 100% |
| High school or higher: | 127 | 100.00% |
| Bachelor's degree or higher: | 3 | 2.36% |
| Private Insurance: | 117 | 50.65% |
| Public Insurance: | 114 | 49.35% |
| No Insurance: | 0 | 0.00% |
| Total: | 231 | 100% |
| Has Health Insurance: | 231 | 100.00% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 17.7% | 21.7% | 0.0% |
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.
| Nursery School, Preschool: | 0 | 0.00% |
| Kindergarten: | 3 | 21.43% |
| Elementary school (grades 1-8): | 11 | 78.57% |
| High school (grades 9-12): | 0 | 0.00% |
| College or graduate school: | 0 | 0.00% |
| Total: | 14 | 100% |
| Early Childhood: | 3 | 21.43% |
| K-12 (Primary & Secondary School): | 14 | 100.00% |
ZIP Code 50623 supports both business and residential activity. According to the Business Census (2024), there are 3 business establishments, employing about 54 people with an annual payroll of $2,544,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 230Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 3Source: CBP |
| 1st Quarter Payroll: | $547,000Source: CBP |
| Annual Payroll: | $2,544,000Source: CBP |
| # of Employees: | 54Source: CBP |
ZIP Code 50623 is located in Black Hawk County, Iowa, within the Waterloo-Cedar Falls, IA Metropolitan Statistical Area (CBSA 47940) and Iowa's 2nd Congressional District. This Metro area has a population of 168,163 people, about 0.09% of whom live in ZIP Code 50623. It covers 2.068 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Waterloo-Cedar Falls, IASource: Census |
| CBSA Number: | 47940Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 168,163Source: Census |
| MSA: | Waterloo-Cedar Falls, IA MSASource: Census |
| Land Area: | 2.068 sq miSource: Census |
| Water Area: | --Source: Census |
| Congressional District: | 02Source: USPS |
| Congressional Land Area: | 12261.92 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | --Source: Census |
| Place Name: | --Source: Census |
We could not locate which school district 50623 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
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 January 1, 2026.