Data Last Updated: April 1, 2024

FAIRFIELD County, CT ZIP Codes

FAIRFIELD County, CT Covers 77 ZIP Codes

ZIP CodeClassificationTimezoneArea Code(s)
06404P.O. BoxEastern203/475
06440P.O. BoxEastern203/475
06468GeneralEastern203/475
06470GeneralEastern203/475
06482GeneralEastern203/475
06484GeneralEastern203/475
06491P.O. BoxEastern203/475
06601P.O. BoxEastern475/203
06602P.O. BoxEastern203/475
06604GeneralEastern203/475
06605GeneralEastern475/203
06606GeneralEastern203
06607GeneralEastern203
06608GeneralEastern203/475
06610GeneralEastern203
06611GeneralEastern203/475
06612GeneralEastern203/475
06614GeneralEastern203
06615GeneralEastern203
06673UniqueEastern475/203
06699UniqueEastern475/203
06784GeneralEastern203/475
06801GeneralEastern203/475
06804GeneralEastern203/475
06807GeneralEastern203/475
06810GeneralEastern203/475
06811GeneralEastern203/475
06812GeneralEastern203/475
06813P.O. BoxEastern203/475
06820GeneralEastern203/475
06824GeneralEastern203/475
06825GeneralEastern203/475
06828GeneralEastern203/475
06829P.O. BoxEastern203/475
06830GeneralEastern203/475
06831GeneralEastern203/475
06836P.O. BoxEastern203/475
06838P.O. BoxEastern203/475
06840GeneralEastern203/475
06850GeneralEastern203/475
06851GeneralEastern203
06852P.O. BoxEastern203/475
06853GeneralEastern475/203
06854GeneralEastern203/475
06855GeneralEastern203/475
06856P.O. BoxEastern203/475
06857UniqueEastern203/475
06858UniqueEastern203/475
06860UniqueEastern203/475
06870GeneralEastern203/475
06875P.O. BoxEastern203/475
06876P.O. BoxEastern203/475
06877GeneralEastern203/475
06878GeneralEastern203
06879UniqueEastern203/475
06880GeneralEastern203/475
06881P.O. BoxEastern203/475
06883GeneralEastern203/475
06888UniqueEastern203/475
06889UniqueEastern203/475
06890GeneralEastern203/475
06896GeneralEastern203/475
06897GeneralEastern203/475
06901GeneralEastern203/475
06902GeneralEastern203/475
06903GeneralEastern203
06904P.O. BoxEastern203/475
06905GeneralEastern203
06906GeneralEastern475/203
06907GeneralEastern203
06910GeneralEastern203
06911P.O. BoxEastern203/475
06912P.O. BoxEastern203/475
06913UniqueEastern203/475
06914UniqueEastern203/475
06926UniqueEastern203/475
06927UniqueEastern203/475

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.Eastern
 
Population: The total Population for Fairfield County, CT, 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. 957,419 (More Details)
Male Population: The sum of all males for Fairfield County, CT 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.464,193
Female Population: The sum of all females for Fairfield County, CT 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.493,226
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.40
 
ZIP Codes: The total number of ZIP Codes which at least partially fall inside Fairfield County, CT. 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.77
Cities: The total number of City names which are associated with ZIP Codes that partially or wholly cross into Fairfield County, CT. 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.35
Counties: The total number of counties associated with ZIP Codes that are at least partially part of Fairfield County, CT.1
Area Codes: The total number of Area Codes associated with ZIP Codes in Fairfield County, CT. 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 Fairfield, CT in square miles. This includes all land and water areas within the legal county boundaries.837 square miles (county)
Land Area: The approximate amount of land area covered by Fairfield, CT 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. 625 square miles (county)
Water Area: The approximate amount of water area covered by Fairfield, CT 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.212 square miles (county)

FAIRFIELD, CT Demographic Information

Total population of FAIRFIELD County, CT: 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.957,419
Male population of FAIRFIELD County, CT: 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.464,193
Female population of FAIRFIELD County, CT: 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.493,226
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.40.3
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.584,184
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.106,756
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.4,369
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.51,341
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.347
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.205,351
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.38.9
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.41.6
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.354,084
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 FAIRFIELD County, CT: 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.2.65
Average family size of FAIRFIELD County, CT: 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.2.99
Total housing units for FAIRFIELD County, CT: 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.378,479


FAIRFIELD County, CT Covers 35 Cities

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