ZIP Code 63544 - Green Castle Missouri
Overview
ZIP Code 63544 is located in Green Castle Missouri. Portions of 63544 are also in Greencastle and Morrow Township (Adair County) and Penn Township and Liberty Township (Adair County) and Elm Township and Buchanan Township (Sullivan County) and Walnut Township (Adair County) and Morris Township (Sullivan County) and Union Township (Sullivan County). 63544 is primarily within Sullivan County, with some portions in Adair County and Putnam County. Regionally, 63544 is located in the Ottumwa-Kirksville Area.
ZIP Code 63544 Quick Stats
| ZIP Code Name | Green Castle |
| Primary County | Sullivan County |
| ZIP Code Type | Standard |
| Population (2022) | 1,071 |
| Area Code(s) | 660 |
| Current Time | CDT |
ZIP Code 63544 Map
63544 Demographics
63544 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Missouri based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 63544 is White. The current unemployment level in 63544 is 4.2%.
| Population | 1,071 |
| Population Growth Rate | 36.07% |
| Population Density | 7 People per Square Mile |
| Total Households | 392 |
| Percentage High Income Households | 1.5% |
| Median Household Income (2021) | $38,393 |
| Average Adjusted Gross Income (2021) | $181,870 |
| Current Unemployment Rate (May 2026) | 4.2% |
| Sales Tax Rate (2025) | 7.5% |
| Majority Race/Ethnicity | White - 93.4% |
63544 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 891 | 93.4% |
| Black | 8 | 0.84% |
| Hispanic | 43 | 4.51% |
| Asian | 5 | 0.52% |
| Native American | 7 | 0.73% |
| Hawaiian/Pac. Islander | 0 | 0% |
63544 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 47 | 8.15% |
| Bachelor Degree | 72 | 12.48% |
| High School Diploma | 272 | 47.14% |
| No High School Diploma | 29 | 5.03% |
| GED or Alternate | 41 | 7.11% |
| 1 or More Years of College | 75 | 13% |
| Associates Degree | 28 | 4.85% |
| Masters Degree | 9 | 1.56% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 4 | 0.69% |
63544 Geography
| Coordinates | 40.23309708, -92.84710693 |
| Adjacent ZIP Codes | |
| Cities/Towns in 63544 | |
| Region | Ottumwa-Kirksville Area |
| Metropolitan/Micropolitan Stat Area | Kirksville, MO |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 143 Square Miles |
63544 Schools
| School Districts in 63544 | |
| Elementary Schools in 63544 | |
| Middle Schools in 63544 | |
| High Schools in 63544 |
63544 Weather and Climate Data
| Plant Hardiness Zone | Zone 5b: -15F to -10F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 40a - Loess Flats and Till Plains | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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