ZIP Code 50440 Map

ZIP Code 50440 Data

ZIP Code50440
ZIP Code NameGrafton
Primary CountyWorth County
ZIP Code TypeStandard
Population (2021)373
Area Code(s)641
Current Time

50440 Demographics

Population Growth Rate-37.94%
Population Density12 People per Square Mile
Total Households186
Percentage High Income Households5.4%
Median Houshold Income (2021)$87,500
Average Adjusted Gross Income (2019)$51,420
Current Unemployment Rate (August 2023)2.8%
Majority Race/EthnictyWhite - 100.00%

50440 Race/Ethnicty Breakdown

Native American00%
Hawaiian/Pac. Islander00%

50440 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College3813.67%
Bachelor Degree4616.55%
High School Diploma8430.22%
No High School Diploma10.36%
GED or Alternate93.24%
1 or More Years of College6322.66%
Associates Degree3010.79%
Masters Degree10.36%
Professional Degree00%
Doctorate Degree00%

50440 Geography

Adjacent ZIP Codes
Cities/Towns in 50440
RegionRochester-Mason City-Austin Area
Metropolitan/Micropolitan Stat AreaMason City, IA
Time ZoneCentral Daylight Time
IANA TimezoneAmerica/Chicago
Area30 Square Miles

50440 Politics

US Congressional Districts in 50440
Iowa State Senate Districts in 50440
Iowa State House of Representatives Districts in 50440

50440 Climate Data

Plant Hardiness ZoneZone 5a: -20F to -15F
Average First Frost DateOctober 1 - 10
Average Last Frost DateMay 1 - 10
Koppen-Geiger Climate ZoneDfa - Humid Continental Hot Summers
Ecoregion47c - Iowan Surface

50440 Annual Climate Data

Avg Min Temp (°F)3102334475761594937231034
Avg Max Temp (°F)22284156697982807260412655
Avg Precip (In.).95.741.993.294.064.734.364.683.322.392.021.0933.59