PlainZIP

Jarrettsville, MD · standard

ZIP Code 21084

Harford County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

7,652
121/sq mi
$121,509
Median income
$448,400
Median home value
42.9%
Bachelor's or higher

The verdict

Jarrettsville pairs a top-decile household income with upper-quartile home values, in a rural, homeowner-dominated area.

Top 9%
household income, US ZIPs
Top 16%
home value, US ZIPs
121
people per sq mi
94%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21084 against every reporting US ZIP.

ZIP code 21084 is a mid-sized community (a standard USPS delivery area) in Jarrettsville, Harford County, Maryland, home to 7,652 residents across 63.5 square miles, a density of 121 people per square mile, in the New York time zone.

ZIP 21084 skews affluent, with a median household income of $121,509 (6% above the Maryland average), while per-capita income is $58,001. The poverty rate stands at 5.7% and the unemployment rate at 5.5%. Median home value sits at $448,400 (0% above the state average), median rent at - a month, and owner-occupancy at 93.6%.

A solid share of residents have a four-year degree: 42.9% of adults hold a bachelor's degree or higher, the median age is 44, and the average commute is 39 minutes. To put 21084 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Harford County, for a geography-aware comparison.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 21084

Top 5 sectors by establishment count in Jarrettsville, MD

Which industries have the most business establishments in ZIP 21084.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 21084, Jarrettsville, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

7,652

Population

63.5

Area (sq mi)

121

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 21084?

44.0

Median Age

51.8%

Male

48.2%

Female

3.1%

Foreign-Born

White 91.4%
African American 0.5%
Asian 3.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.1%
Hispanic or Latino 0.8%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$121,509

Median Household Income

+6% vs state

$58,001

Per Capita Income

5.7%

Poverty Rate

5.5%

Unemployment Rate

39.2 min

Mean Commute Time

How ZIP 21084 ranks nationally

Jarrettsville, MD household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$121,509 Top 9% higher than 91% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). This entry sits in this band. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 66.1%
Bachelor's Degree or Higher 42.9%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

2,765

Total Housing Units

2,724

Occupied Units

41

Vacant Units

2.59

Avg Household Size

Occupancy Type

Owner 93.6%
Renter 6.4%

$448,400

Median Home Value

+0% vs state

1978

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+4.6%

YoY Change (2024)

240

HPI Index (2000 = 100)

+140%

Total Change Since 2000

Home values in ZIP 21084 have increased 4.6% over the past year (2024). Since 2000, this ZIP has seen +140% cumulative appreciation.

Year Annual Change HPI Index
2020 +3.7% 176
2021 +8.2% 190
2022 +13.3% 215
2023 +6.5% 229
2024 +4.6% 240

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 191 business establishments in ZIP 21084, employing approximately 1,044 people with a combined annual payroll of $52,539,000.

191

Businesses

1,044

Employees

$52.5M

Annual Payroll

13

Industry Sectors

Industry Establishments % of Total
Construction 58 30.4%
Professional, scientific, and technical services 21 11.0%
Retail trade 19 9.9%
Administrative and support and waste management and remediation services 19 9.9%
Other services (except public administration) 19 9.9%
Health care and social assistance 14 7.3%
Real estate and rental and leasing 10 5.2%
Finance and insurance 6 3.1%
Accommodation and food services 6 3.1%
Transportation and warehousing 5 2.6%
Wholesale trade 4 2.1%
Information 3 1.6%
Educational services 3 1.6%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 21084 vs 21050 →

ZIP 21084 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 21084 ranks #3 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 21084 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 21084 ranks #8 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
21050 Forest Hill, MD 18,202 4.4 mi
21047 Fallston, MD 11,873 6.2 mi
21132 Pylesville, MD 2,634 5.8 mi
21013 Baldwin, MD 4,653 7.5 mi
21154 Street, MD 6,464 6.3 mi
21161 White Hall, MD 5,490 6.2 mi
21082 Hydes, MD 654 9.5 mi
21051 Fork, MD 279 10.0 mi
17321 Fawn Grove, PA 2,238 9.6 mi
21111 Monkton, MD 4,903 6.8 mi

More ZIP Codes in Harford County

21014 standard
Bel Air, MD
Pop: 36,047
21009 standard
Abingdon, MD
Pop: 29,766
21015 standard
Bel Air, MD
Pop: 27,763
21040 standard
Edgewood, MD
Pop: 24,420
21001 standard
Aberdeen, MD
Pop: 21,487
21050 standard
Forest Hill, MD
Pop: 18,202

Related Areas

Harford County Jarrettsville, MD Maryland

Frequently Asked Questions

What county is ZIP code 21084 in? ▼
ZIP code 21084 (Jarrettsville) is located in Harford County, Maryland. Harford County contains multiple ZIP codes, see the full list at /counties/harford-md.
What is the population of ZIP code 21084? ▼
ZIP code 21084 in Jarrettsville, MD has a population of 7,652 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21084? ▼
The median household income in ZIP 21084 is $121,509, which is 59% above the national average of $76,288.
What is the average home value in ZIP 21084? ▼
The median home value in ZIP 21084 is $448,400, which is 61% above the national average of $278,155.
What is the demographic makeup of ZIP 21084? ▼
The largest racial group in ZIP 21084 is White at 91.4%. Hispanic or Latino residents make up 0.8% of the population.
How many businesses are in ZIP code 21084? ▼
ZIP code 21084 has 191 business establishments employing approximately 1,044 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21084? ▼
The top industries by establishment count in ZIP 21084 are: Construction (58), Professional, scientific, and technical services (21), Retail trade (19). There are 13 industry sectors represented in total.
How have home values changed in ZIP code 21084? ▼
According to the FHFA House Price Index, home values in ZIP 21084 increased by 4.6% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 140%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 21084? ▼
In ZIP code 21084, 66.1% of residents aged 25+ have a high school diploma or higher, and 42.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 21084? ▼
The mean commute time for workers in ZIP code 21084 is 39.2 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 21084? ▼
In ZIP code 21084, approximately 93.6% of occupied housing units are owner-occupied and 6.4% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21084? ▼
The poverty rate in ZIP code 21084 is 5.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.