Data Last Updated: July 1, 2025

Knox County, ME ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Knox, ME.	20 ZIP Codes (16 General, 4 PO Box, 0 Unique, & 0 Multi County) [More Details]
Area Code: The Telephone Area Code that are associated with Knox, ME. Area Codes are used in the North American Numbering Plan (NANP) to facilitate phone routing. There are approximately 350 area codes in use in the United States.	207
Timezone: Time zone designation within the U.S. Please note that not all areas in the U.S. observe daylight saving time which can affect actual local time for this city. 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.	Eastern
Local Time: The current local time for each timezone. If more than 1 time zone for this area, all local times will be shown. Counties can cross timezones, so more than 1 may be shown.	12:00:00 AM
Population: The population of Knox, ME from the U.S. Census 2020. Included are U.S. Citizens, permanent residents, temporary migrants, and undocumented individuals. The total population represents people who live in the city, not just those present while the Census was being completed.	40,607 [More Details]
FIPS: FIPS stands for Federal Information Processing Standards, which are a set of publicly announced standards for computer systems. A county FIPS code is a unique numeric identifier for a county in the United States, assigned by the National Institute of Standards and Technology (NIST). County FIPS codes have five digits, with the first two digits identifying the state and the last 3 indicating the county.	23013
CBSA: A Core Based Statistical Area (CBSA) is the recognized term for a region that functions around an urban core with a population of at least 10,000 people, according to the standards set by the Office of Management and Budget (OMB) in 2000. A CBSA is divided into two subsets: Metro and Micro, and these classifications are determined by population density. A Micro area is identified by a population ranging between 10,000 to 50,000, while a Metro area is defined as having a population that exceeds 50,000.	None
Land Area: The approximate amount of land area covered by Knox, ME in square miles. The Land Area provided by the Census Bureau is based on geographic boundaries that include the mainland, islands, inland, coastal, Great Lakes, and territorial waters associated with each city.	365 square miles
Water Area: The approximate amount of water area covered by Knox, ME in square miles. Calculations by the Census Bureau for Water Area take into account inland bodies of water, coastal regions, Great Lakes, and territorial sea waters. This encompasses features such as lakes, reservoirs, rivers, and coastal water bodies.	779 square miles
Coordinates: The latitude/longitude centroid coordinates for Knox County, ME.	-69.168569, 44.141042
Quick Link: Copy the direct link to the Knox, MECounty page and use anywhere you like!	https://www.zip-codes.com/county/me-knox.asp

Knox, ME ZIP Code Boundaries

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Knox County, ME Covers 20 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 04547	General	Friendship	1,142	2.81%
ZIP Code 04563	General	Cushing	1,502	3.70%
ZIP Code 04574	General	Washington	1,592	3.92%
ZIP Code 04645	P.O. Box	Isle Au Haut	92	0.23%
ZIP Code 04841	General	Rockland	6,936	17.08%
ZIP Code 04843	General	Camden	5,241	12.91%
ZIP Code 04847	General	Hope	1,698	4.18%
ZIP Code 04851	P.O. Box	Matinicus	53	0.13%
ZIP Code 04853	General	North Haven	408	1.00%
ZIP Code 04854	General	Owls Head	1,517	3.74%
ZIP Code 04855	P.O. Box	Port Clyde	163	0.40%
ZIP Code 04856	General	Rockport	3,644	8.97%
ZIP Code 04858	General	South Thomaston	1,497	3.69%
ZIP Code 04859	General	Spruce Head	645	1.59%
ZIP Code 04860	General	Tenants Harbor	1,800	4.43%
ZIP Code 04861	General	Thomaston	2,739	6.75%
ZIP Code 04862	General	Union	3,794	9.34%
ZIP Code 04863	General	Vinalhaven	1,279	3.15%
ZIP Code 04864	General	Warren	4,865	11.98%
ZIP Code 04865	P.O. Box	West Rockport	0	0.00%

* Indicates a Multi County ZIP Code. These ZIP Codes partially cross over into Knox, ME, but will mostly cover area in a different County. Not included in % of Population calculations.

Important Knox, ME Information

Knox County, ME Covers 20 ZIP Codes. This includes 16 General ZIP Codes, 4 PO Box ZIP Codes, and 0 Unique (reserved for Business and Volume Mail Receivers).

The population for Knox County is 40,607, according to the U.S. Census. Population Density is 111.25 persons per square mile. With 24,255 Housing Units, the Average Household Size is 2.19 persons. There are 17,883 Family Households with an Average Family Size of 2.96 persons. 5.26% of the population is without Health Insurance. The 55.74% Employment Rate is 4.06% above the national average of 59.8%.31,412 people aged 25+ have some educational achievement, with 39.10% (or 12,283 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

207 is the only area code for this area. Knox is also located in the Eastern timezone and the current local time is shown above.

ZIP Codes in Knox, ME have 17,830 Residential mailboxes and 1,167 Business mailboxes.There are 1,825 businesses with a total of 14,197 employees. That is an average of 7.8 employees per business. Annual payroll for these businesses is $715,180,000. Other Demographics

Knox County Demographic Profile

Population & People

Total Population

40,607

Income

Median Household Income

$71,903

Housing

Total Housing Units

24,255

Health

Without Healthcare Coverage

5.26%

Business & Economy

Total Businesses

1,825

Families

Total Households

17,883

Employment

Employment Rate

55.74%

Education

Bachelor's Degree or Higher

39.10%

Total Population: Total number of people from the 2020 U.S. Census for Knox, ME. This reflects the exact count of this 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.	40,607
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Knox, ME. This is derived from known delivery information, household occupancy rates, household size, and more to come up with an accurate estimation for the current population. IMPORTANT: This does not include population totals for persons in nursing homes, correctional facilities, or other institutions. This is an estimation of the household population based on US Postal Service delivery information.	38,951
Total Households: Total number of Households from the 2020 U.S. Census for Knox, ME. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	17,883
Total Housing Units: 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.	24,255
Average Household Size: 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.	2.19
Average Family Size: 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.	2.96

Other Knox Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	17,830
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	1,167
Total Delivery Receptacles: The total number of delivery receptacles. This includes curb side mailboxes, centralized units, PO Boxes, NDCBU, and contract boxes. This count is for Residential and Business combined.	25,508
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	15,819
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	561

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	1,825
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$156,540,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$715,180,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	14,197

Sum of all ZIP Codes assigned Knox, ME as their primary County.

References

U.S. Postal Service [Last Updated: 7/1/2025], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 7/1/2025], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov