ZIP Code 63473 - Williamstown Missouri
Overview
ZIP Code 63473 is located in Williamstown Missouri. Portions of 63473 are also in Lyon Township (Lewis County) and Reddish Township. 63473 is entirely within Lewis County. Regionally, 63473 is located in Quincy-Hannibal-Keokuk.
ZIP Code 63473 Quick Stats
| ZIP Code Name | Williamstown |
| Primary County | Lewis County |
| ZIP Code Type | Standard |
| Population (2022) | 318 |
| Area Code(s) | 235 / 573 |
| Current Time | CDT |
ZIP Code 63473 Map
63473 Demographics
63473 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 63473 is White. The current unemployment level in 63473 is 4.2%.
| Population | 318 |
| Population Growth Rate | -2.43% |
| Population Density | 10 People per Square Mile |
| Total Households | 149 |
| Median Household Income (2021) | $69,891 |
| Average Adjusted Gross Income (2021) | $111,600 |
| Current Unemployment Rate (May 2026) | 4.2% |
| Sales Tax Rate (2025) | 7.3% |
| Majority Race/Ethnicity | White - 95.64% |
63473 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 307 | 95.64% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 14 | 4.36% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
63473 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 47 | 19.67% |
| Bachelor Degree | 39 | 16.32% |
| High School Diploma | 80 | 33.47% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 14 | 5.86% |
| 1 or More Years of College | 44 | 18.41% |
| Associates Degree | 0 | 0% |
| Masters Degree | 15 | 6.28% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
63473 Geography
| Coordinates | 40.2259407, -91.7726059 |
| Adjacent ZIP Codes | |
| Cities/Towns in 63473 | |
| Region | Quincy-Hannibal-Keokuk |
| Metropolitan/Micropolitan Stat Area | Quincy, IL-MO |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 33 Square Miles |
63473 Schools
| School Districts in 63473 | |
| Elementary Schools in 63473 | |
| High Schools in 63473 |
63473 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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