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Data Last Updated: December 1, 2024
WASHINGTON County, MO ZIP Codes
WASHINGTON County, MO Covers 18 ZIP Codes| ZIP Code | Classification | City | Population | Area Code(s) | | ZIP Code 63020 * | General | De Soto | 20,408 | 636 | | ZIP Code 63023 * | General | Dittmer | 4,844 | 636 | | ZIP Code 63030 * | General | Fletcher | 267 | 636 | | ZIP Code 63060 * | General | Lonedell | 2,027 | 636 | | ZIP Code 63071 | General | Richwoods | 1,094 | 235/573 | | ZIP Code 63080 * | General | Sullivan | 13,554 | 235/573 | | ZIP Code 63622 | General | Belgrade | 934 | 235/573 | | ZIP Code 63624 * | General | Bismarck | 3,293 | 235/573 | | ZIP Code 63626 * | General | Blackwell | 935 | 636 | | ZIP Code 63628 * | General | Bonne Terre | 16,373 | 235/573 | | ZIP Code 63630 | General | Cadet | 4,169 | 235/573 | | ZIP Code 63631 | General | Caledonia | 754 | 235/573 | | ZIP Code 63648 | General | Irondale | 1,348 | 235/573 | | ZIP Code 63660 | General | Mineral Point | 3,699 | 235/573 | | ZIP Code 63664 | General | Potosi | 8,333 | 235/573 | | ZIP Code 63674 | P.O. Box | Tiff | 119 | 235/573 | | ZIP Code 65441 * | General | Bourbon | 4,760 | 235/573 | | ZIP Code 65565 * | General | Steelville | 5,238 | 235/573 |
* Indicates a Multi County ZIP Code, whose primary County is something other than Washington, MO.
| Timezone(s): All Time Zones found within this county. In the United States, there are 7 standard time zones which are, from west to east: Hawaii-Aleutian, Alaska, Pacific, Mountain, Central, Eastern, Atlantic. Also included in U.S. Territories are Samoa, Guam and Palau. The alignment between ZIP codes and time zones is not perfect. A single time zone can cover multiple ZIP codes, and, conversely, a single ZIP code could theoretically span across multiple time zones, although this is quite rare. | Central | | | | | Population: The total Population for Washington County, MO, taken from the 2020 U.S. Census DP1. This population total includes all people residing in and counts them regardless of citizenship or immigration status. Include are U.S. Citizens, permanent residents, temporary migrants, and undocumented workers. The total population represents people who live in the state, not just those present on the day of the census. State Population is critical in determining political representation, funding allocation, planning and policy-making, and demographic analysis.
| 23,514 (More Details) | | Male Population: The sum of all males for Washington County, MO from the 2020 U.S. Census DP1. Each respondent self-identified their gender on the survey, as they were asked to indicate their gender assigned at birth. The male population information is important for healthcare planning, policy making, social research, and economic planning and development. | 12,204 | | Female Population: The sum of all females for Washington County, MO from the 2020 U.S. Census DP1. Each respondent self-identified their gender on the survey, as they were asked to indicate their gender assigned at birth. The female population information is important for healthcare planning, policy making, social research, and economic planning and development. | 11,310 | | Median Age: The median age of the total population of this county. Median age is not a future prediction, it is the actual number from the 2020 Census. Median age is the middle age of the population. Half the population is older than the average age and half is younger. | 42 | | | | | ZIP Codes: The total number of ZIP Codes which at least partially fall inside Washington County, MO. Did you know that approximately 23% of ZIP Codes cross county lines? Several even cross State lines. ZIP Codes do not follow other geographic boundaries because they were created exclusively for the expedient delivery of mail. | 8 | | Cities: The total number of City names which are associated with ZIP Codes that partially or wholly cross into Washington County, MO. Alongside the official city name, USPS also recognizes certain alternate names for cities or towns that can be used in mailing addresses. These may include towns, villages, abbreviations, names in other languages, or names that have been commonly used historically. | 8 | | Counties: The total number of counties associated with ZIP Codes that are at least partially part of Washington County, MO. | 1 | | Area Codes: The total number of Area Codes associated with ZIP Codes in Washington County, MO. Area codes are used in the North American Numbering Plan (NANP) to facilitate phone routing. Each area code identifies a specific geographic area (usually part of a state or territory) and allows calls to be routed to the correct area. There are approximately 350 area codes in use in the United States. | 2 | | | | | Total Area: The approximate amount of area covered by Washington, MO in square miles. This includes all land and water areas within the legal county boundaries. | 762 square miles (county) | | Land Area: The approximate amount of land area covered by Washington, MO in square miles. Land area data provided by the Census Bureau are based on geographic boundaries that include the mainland, islands, inland, coastal, Great Lakes, and territorial waters associated with each state. Land area is important in many types of statistical analysis. For example, population density, the number of people per unit of land area, is a commonly used statistic based on this data. Land area measurements are also important for urban planning, environmental studies, and economic analysis. | 760 square miles (county) | | Water Area: The approximate amount of water area covered by Washington, MO in square miles. Calculations for water area take into account inland bodies of water, coastal regions, Great Lakes, and territorial sea waters. This encompassed features such as lakes, reservoirs, rivers, and coastal water bodies. Water surface data are especially important for environmental and conservation planning, water resource management, transportation, and recreational planning. | 3 square miles (county) |
WASHINGTON, MO Demographic Information * Demographic data is based on 2020 Census. | Total population of WASHINGTON County, MO: Total Population from the 2020 Census. This reflects the exact population of the geographic area at that point in time, not future estimates, regardless of citizenship or immigration status. It is intended to count all persons living within the geographic area, not just those present on the day of the census. | 23,514 | | Male population of WASHINGTON County, MO: The Male Population from the 2020 Census. This is not a forecast for the future, but an exact count for this geographic area at the time of the Census. Each respondent self-identified their gender on the survey, as they were asked to indicate their gender assigned at birth. The Male Population information is important for healthcare planning, policy making, social research, and economic planning and development. | 12,204 | | Female population of WASHINGTON County, MO: The Female Population from the 2020 Census. This is not a forecast for the future, but an exact count for this geographic area at the time of the Census. Each respondent self-identified their gender on the survey, as they were asked to indicate their gender assigned at birth. The Female Population information is important for healthcare planning, policy making, social research, and economic planning and development. | 11,310 | | Median age (years): The Median Age of the Total Population from the 2020 Census for this geographic area. Median age is not a future prediction, it is the actual calculated age from the 2020 Census. Median age is the middle age of the population. Half the population is older than the average age and half is younger. Median Age can relate how young or old a geographic area is compared to others. If one area is 44 and the other is 40, then the first are is an average of 4 years older. | 42.2 | | White Population: The White Population is an exact count from the 2020 Census for this geographic area. The numbers for the White Population are not future projections. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including White. This count includes all who selected White/Caucasian in their response, even if they selected another race as well. | 21,465 | | Black Population: The Black Population is an exact count from the 2020 Census for this geographic area. The numbers for the Black Population are not future projections. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including Black or African American. This count includes all who selected Black or African American in their response, even if they selected another race as well. | 610 | | Indian Population: The American Indian and Alaska Native Population is an exact count from the 2020 Census for this geographic area and not estimates for the future. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including American Indian and Alaska Native. This count includes all who selected American Indian and Alaska Native in their response, even if they selected another race as well. | 79 | | Asian Population: The Asian Population is an exact count from the 2020 Census for this geographic area, not future projections. On the U.S. Census questionnaire, people were asked to check all races which applied to them, including Chinese, Filipino, Asian Indian, Vietnamese, Korean, Japanese, or Other Asian. This count includes all who selected one of these options in their response, even if they selected another race as well. | 40 | | Hawaiian Population: The Hawaiian or Pacific Islander Population is an exact count from the 2020 Census for this geographic area and are not future projections. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including Native Hawaiian and Pacific Islander. This count includes all who selected either Hawaiian or Pacific Islander in their response, even if they selected another race as well. | 1 | | Hispanic Population: The Hispanic Population is an exact count from the 2020 Census for this geographic area and is not an estimate or future projection. On the 2020 U.S. Census questionnaire, people were first asked for their Ethnicity, including if they were from Hispanic, Latino, or Spanish Origin, including Mexican, Mexican American, Chicano, Puerto Rican, Cuban, or other ethnic origin. This count includes all who affirmed that they were part of this ethnic origin. Respondents who selected this option were also asked to select a race separately and would be counted once in this number as well as the race they chose as well. From the U.S. Census definition, Hispanic is an ethnic origin and not a race. | 227 | | Median age (Male): The Median Age of all Males from the 2020 Census for this geographic area. The Male Median Age is the actual average from the 2020 Census, not an estimate or future projection. Median Age is the average age of the population. Half of the population is older than the average age and the other half is younger. Gender is self-reported by individuals when asked about their sex at birth. | 41.8 | | Median age (Female): The Median Age of all Females from the 2020 Census for this geographic area. The Female Median Age is the actual average from the 2020 Census, not an estimate or future projection. Median Age is the average age of the population. Half of the population is older than the average age and the other half is younger. Gender is self-reported by individuals when asked about their sex at birth. | 42.6 | | Total Households: Total Number of Households from the 2020 U.S. Census for this geographic area. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone. | 8,919 | | Married-Couple Households: Total Married-Couple Households is based on the 2020 U.S. Census and is not an estimate. Under the U.S. Census Bureau definition, Married Couple Households refers to the count of households where the householder and his or her spouse are listed as members of the same household. It does include same-sex marriage households and the households themselves may also include other individuals, such as children or other relatives. | | | Average Household Size for WASHINGTON County, MO: The Average Household Size, is obtained by dividing the number of people in Households (excluding those in group quarters, nursing home, prisons, and dorm rooms) by the number of Households. A Household includes everyone living in a residential unit. Those who do not live in a household are classified as living in group accommodation. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly. | 2.51 | | Average family size of WASHINGTON County, MO: Average Family Size is calculated by dividing the number of people in a Family Household by the number of Family Households. The U.S. Census Bureau defines family households as households consisting of two or more individuals who are related by birth, marriage, or adoption. They also may include other unrelated people. Non-family households consist of people who live alone or who share their residence with unrelated individuals. The Average Family Size only looks at the households classified as Family Households. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly. | 3 | | Total housing units for WASHINGTON County, MO: The total number of Housing Units is the number of occupied units + the number of vacant units. Ownership is defined by whether the unit is occupied by an owner or by a tenant. Owner occupancy means that the owner lives in the unit. This value comes from the 2020 U.S. Census and is not a projection or estimate. | 10,719 |
WASHINGTON County, MO Covers 8 Cities
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Postal Code Database
