Data Last Updated: July 1, 2025

Harford County, MD ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Harford, MD.	25 ZIP Codes (19 General, 2 PO Box, 0 Unique, & 4 Multi County) [More Details]
Area Codes: The Telephone Area Codes that are associated with Harford, MD. 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.	410, 443, 667
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 Harford, MD 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.	260,924 [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.	24025
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.	Baltimore-Columbia-Towson, MD
Land Area: The approximate amount of land area covered by Harford, MD 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.	437 square miles
Water Area: The approximate amount of water area covered by Harford, MD 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.	90 square miles
Coordinates: The latitude/longitude centroid coordinates for Harford County, MD.	-76.317079, 39.561144
Quick Link: Copy the direct link to the Harford, MDCounty page and use anywhere you like!	https://www.zip-codes.com/county/md-harford.asp

Harford, MD ZIP Code Boundaries

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Harford County, MD Covers 25 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 21001	General	Aberdeen	25,714	9.85%
ZIP Code 21005	General	Aberdeen Proving Ground	1,709	0.65%
ZIP Code 21009	General	Abingdon	31,835	12.20%
ZIP Code 21010	General	Gunpowder	153	0.06%
ZIP Code 21013 *	General	Baldwin	4,861	--
ZIP Code 21014	General	Bel Air	38,395	14.72%
ZIP Code 21015	General	Bel Air	30,400	11.65%
ZIP Code 21017	General	Belcamp	6,526	2.50%
ZIP Code 21018	P.O. Box	Benson	0	0.00%
ZIP Code 21028	General	Churchville	3,172	1.22%
ZIP Code 21034	General	Darlington	3,314	1.27%
ZIP Code 21040	General	Edgewood	25,138	9.63%
ZIP Code 21047	General	Fallston	12,876	4.93%
ZIP Code 21050	General	Forest Hill	18,681	7.16%
ZIP Code 21078	General	Havre De Grace	20,321	7.79%
ZIP Code 21082 *	General	Hydes	815	--
ZIP Code 21084	General	Jarrettsville	7,600	2.91%
ZIP Code 21085	General	Joppa	17,142	6.57%
ZIP Code 21087 *	General	Kingsville	5,634	--
ZIP Code 21111 *	General	Monkton	5,062	--
ZIP Code 21130	P.O. Box	Perryman	140	0.05%
ZIP Code 21132	General	Pylesville	2,930	1.12%
ZIP Code 21154	General	Street	6,309	2.42%
ZIP Code 21160	General	Whiteford	2,449	0.94%
ZIP Code 21161	General	White Hall	5,333	2.04%

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

Important Harford, MD Information

Harford County, MD Covers 25 ZIP Codes. This includes 19 General ZIP Codes, 2 PO Box ZIP Codes, and 0 Unique (reserved for Business and Volume Mail Receivers). There are also 4 Multi County ZIP Codes. These records are assigned a different primary county, but they partially cover area in Harford County.

The population for Harford County is 260,924, according to the U.S. Census. Population Density is 597.08 persons per square mile. With 103,284 Housing Units, the Average Household Size is 2.64 persons. There are 98,282 Family Households with an Average Family Size of 2.89 persons. 3.21% of the population is without Health Insurance. The 65.14% Employment Rate is 5.34% above the national average of 59.8%.183,637 people aged 25+ have some educational achievement, with 39.48% (or 72,505 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

There are 3 area codes serving this area including410, 443 and 667. Harford is also located in the Eastern timezone and the current local time is shown above.

Harford is part of the Baltimore-Columbia-Towson, MD Core Based Statistical Area (CBSA). Its CBSA Code is 12580.It is classified as a metro area, which means the combined population is 50,000 or more (at its core).

CBSAs are defined by the OMB as geographic areas that have at least one core with a population of 10,000 or more (for a micro area) 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 Harford, MD have 104,375 Residential mailboxes and 4,951 Business mailboxes.There are 5,630 businesses with a total of 77,019 employees. That is an average of 13.7 employees per business. Annual payroll for these businesses is $4,053,933,000. Other Demographics

Harford County Demographic Profile

Population & People

Total Population

260,924

Income

Median Household Income

$111,317

Housing

Total Housing Units

103,284

Health

Without Healthcare Coverage

3.21%

Business & Economy

Total Businesses

5,630

Families

Total Households

98,282

Employment

Employment Rate

65.14%

Education

Bachelor's Degree or Higher

39.48%

Total Population: Total number of people from the 2020 U.S. Census for Harford, MD. 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.	260,924
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Harford, MD. 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.	274,878
Total Households: Total number of Households from the 2020 U.S. Census for Harford, MD. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	98,282
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.	103,284
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.	2.64
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.	2.89

Other Harford Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	104,375
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	4,951
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.	139,908
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	64,001
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	11,020

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	5,630
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$936,549,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$4,053,933,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	77,019

Sum of all ZIP Codes assigned Harford, MD 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