Data Last Updated: December 1, 2024

LOWER CT RIVER VLY County, CT ZIP Codes

LOWER CT RIVER VLY County, CT Covers 32 ZIP Codes

ZIP Code	Classification	City	Population	Area Code(s)
ZIP Code 06023 *	General	East Berlin	1,344	860/959
ZIP Code 06073 *	General	South Glastonbury	5,501	860/959
ZIP Code 06333	General	East Lyme	7,289	860/959
ZIP Code 06371	General	Old Lyme	9,840	860/959
ZIP Code 06376	P.O. Box	South Lyme	40	860/959
ZIP Code 06409	General	Centerbrook	686	860/959
ZIP Code 06412	General	Chester	3,749	860/959
ZIP Code 06413	General	Clinton	13,161	860/959
ZIP Code 06414	P.O. Box	Cobalt	330	860/959
ZIP Code 06415 *	General	Colchester	16,300	860/959
ZIP Code 06416 *	General	Cromwell	14,225	860/959
ZIP Code 06417	General	Deep River	4,415	860/959
ZIP Code 06419	General	Killingworth	6,174	860/959
ZIP Code 06420	General	Salem	4,250	860/959
ZIP Code 06422	General	Durham	7,152	860/959
ZIP Code 06423	General	East Haddam	4,821	860/959
ZIP Code 06424	General	East Hampton	12,403	860/959
ZIP Code 06426	General	Essex	3,453	860/959
ZIP Code 06438	General	Haddam	2,616	860/959
ZIP Code 06439 *	P.O. Box	Hadlyme	100	860/959
ZIP Code 06441	General	Higganum	5,484	860/959
ZIP Code 06442	General	Ivoryton	2,594	860/959
ZIP Code 06450	General	Meriden	36,007	203/475
ZIP Code 06455	General	Middlefield	2,958	203/475
ZIP Code 06456	P.O. Box	Middle Haddam	355	860/959
ZIP Code 06457	General	Middletown	46,505	860/959
ZIP Code 06459	Unique	Middletown	1,212	860/959
ZIP Code 06469	General	Moodus	3,272	860/959
ZIP Code 06475	General	Old Saybrook	10,481	860/959
ZIP Code 06480	General	Portland	9,365	860/959
ZIP Code 06481	General	Rockfall	1,259	203/475
ZIP Code 06498	General	Westbrook	6,793	860/959

* Indicates a Multi County ZIP Code, whose primary County is something other than Lower Ct River Vly, CT.

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 Lower Ct River Vly 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.	No Population Data
Male Population: The sum of all males for Lower Ct River Vly 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.	No Data
Female Population: The sum of all females for Lower Ct River Vly 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.	No Data
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.	No Data

ZIP Codes: The total number of ZIP Codes which at least partially fall inside Lower Ct River Vly 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.	27
Cities: The total number of City names which are associated with ZIP Codes that partially or wholly cross into Lower Ct River Vly 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.	26
Counties: The total number of counties associated with ZIP Codes that are at least partially part of Lower Ct River Vly County, CT.	1
Area Codes: The total number of Area Codes associated with ZIP Codes in Lower Ct River Vly 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.	4

Total Area: The approximate amount of area covered by Lower Ct River Vly, CT in square miles. This includes all land and water areas within the legal county boundaries.	0 square miles (county)
Land Area: The approximate amount of land area covered by Lower Ct River Vly, 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.	0 square miles (county)
Water Area: The approximate amount of water area covered by Lower Ct River Vly, 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.	0 square miles (county)

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LOWER CT RIVER VLY, CT Demographic Information

* Demographic data is based on 2020 Census.

No demographics data is available for this County.

LOWER CT RIVER VLY County, CT ZIP Codes

LOWER CT RIVER VLY County, CT Covers 32 ZIP Codes

LOWER CT RIVER VLY, CT Demographic Information

LOWER CT RIVER VLY County, CT Covers 26 Cities