Data Last Updated: July 1, 2025

Northumberland County, PA ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Northumberland, PA.	30 ZIP Codes (18 General, 7 PO Box, 0 Unique, & 5 Multi County) [More Details]
Area Codes: The Telephone Area Codes that are associated with Northumberland, PA. 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.	223, 717, 272, 570
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 Northumberland, PA 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.	91,647 [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.	42097
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.	Sunbury, PA
Land Area: The approximate amount of land area covered by Northumberland, PA 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.	458 square miles
Water Area: The approximate amount of water area covered by Northumberland, PA 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.	20 square miles
Coordinates: The latitude/longitude centroid coordinates for Northumberland County, PA.	-76.709474, 40.851972
Quick Link: Copy the direct link to the Northumberland, PACounty page and use anywhere you like!	https://www.zip-codes.com/county/pa-northumberland.asp

Northumberland, PA ZIP Code Boundaries

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Northumberland County, PA Covers 30 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 17017	General	Dalmatia	1,723	1.88%
ZIP Code 17730	P.O. Box	Dewart	198	0.22%
ZIP Code 17749	P.O. Box	Mc Ewensville	291	0.32%
ZIP Code 17756 *	General	Muncy	12,458	--
ZIP Code 17772	General	Turbotville	2,433	2.65%
ZIP Code 17777	General	Watsontown	6,769	7.39%
ZIP Code 17801	General	Sunbury	16,332	17.82%
ZIP Code 17820 *	General	Catawissa	5,459	--
ZIP Code 17821 *	General	Danville	18,663	--
ZIP Code 17823	General	Dornsife	1,225	1.34%
ZIP Code 17824	General	Elysburg	3,997	4.36%
ZIP Code 17830	General	Herndon	2,017	2.20%
ZIP Code 17832	P.O. Box	Marion Heights	581	0.63%
ZIP Code 17834	General	Kulpmont	3,411	3.72%
ZIP Code 17836	General	Leck Kill	184	0.20%
ZIP Code 17840	General	Locust Gap	295	0.32%
ZIP Code 17847	General	Milton	11,703	12.77%
ZIP Code 17850	P.O. Box	Montandon	595	0.65%
ZIP Code 17851	General	Mount Carmel	7,256	7.92%
ZIP Code 17857	General	Northumberland	7,743	8.45%
ZIP Code 17860	General	Paxinos	2,172	2.37%
ZIP Code 17865	P.O. Box	Potts Grove	57	0.06%
ZIP Code 17866	General	Coal Township	10,105	11.03%
ZIP Code 17867	General	Rebuck	181	0.20%
ZIP Code 17868	P.O. Box	Riverside	774	0.84%
ZIP Code 17872	General	Shamokin	9,223	10.06%
ZIP Code 17877	P.O. Box	Snydertown	0	0.00%
ZIP Code 17881	General	Trevorton	1,477	1.61%
ZIP Code 17941 *	General	Klingerstown	766	--
ZIP Code 17964 *	General	Pitman	769	--

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

Important Northumberland, PA Information

Northumberland County, PA Covers 30 ZIP Codes. This includes 18 General ZIP Codes, 7 PO Box ZIP Codes, and 0 Unique (reserved for Business and Volume Mail Receivers). There are also 5 Multi County ZIP Codes. These records are assigned a different primary county, but they partially cover area in Northumberland County.

The population for Northumberland County is 91,647, according to the U.S. Census. Population Density is 200.10 persons per square mile. With 43,300 Housing Units, the Average Household Size is 2.32 persons. There are 37,932 Family Households with an Average Family Size of 3.09 persons. 3.65% of the population is without Health Insurance. The 54.63% Employment Rate is 5.17% above the national average of 59.8%.66,645 people aged 25+ have some educational achievement, with 19.17% (or 12,778 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

There are 4 area codes serving this area including223, 717, 272 and 570. Northumberland is also located in the Eastern timezone and the current local time is shown above.

Northumberland is part of the Sunbury, PA Core Based Statistical Area (CBSA). Its CBSA Code is 44980.It is classified as a micro area, which means it has an urban core of at least 10,000 but less then 50,000 people.

CBSAs are defined by the OMB as geographic areas that have at least one core with a population of 10,000 or more and adjacent territory with a high degree of social and economic integration. CBSA codes are commonly used to accurately file Medicare claims and to verify applicable incentives using a patient's ZIP Code.

ZIP Codes in Northumberland, PA have 38,308 Residential mailboxes and 1,970 Business mailboxes.There are 1,609 businesses with a total of 23,435 employees. That is an average of 14.6 employees per business. Annual payroll for these businesses is $1,088,618,000. Other Demographics

Northumberland County Demographic Profile

Population & People

Total Population

91,647

Income

Median Household Income

$57,948

Housing

Total Housing Units

43,300

Health

Without Healthcare Coverage

3.65%

Business & Economy

Total Businesses

1,609

Families

Total Households

37,932

Employment

Employment Rate

54.63%

Education

Bachelor's Degree or Higher

19.17%

Total Population: Total number of people from the 2020 U.S. Census for Northumberland, PA. 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.	91,647
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Northumberland, PA. 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.	88,742
Total Households: Total number of Households from the 2020 U.S. Census for Northumberland, PA. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	37,932
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.	43,300
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.	2.32
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.	3.09

Other Northumberland Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	38,308
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	1,970
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.	44,478
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	35,032
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	1,714

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	1,609
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$268,046,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$1,088,618,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	23,435

Sum of all ZIP Codes assigned Northumberland, PA 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