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 High-density area
- $121,509
- Median income Above-median income area
- $448,400
- Median home value Above-median home value
- 42.9%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 21084 (Jarrettsville, MD) rose +4.6% from 2023 to 2024. The all-transactions index moved from 229.2 in 2023 to 239.8 in 2024 (2000 = 100).
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 average Maryland ZIP), while per-capita income is $58,001. The poverty rate is 5.7%, with unemployment at 5.5%; those measures add context to the income figure. Median home value is $448,400 (0% above the average Maryland ZIP); 93.6% of occupied homes are owner-occupied.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Harford County, so 21084 can be compared with both its immediate and county-level context.
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.
- Construction
Construction
58 establishments
- Professional, scientific, and technical services 21
Professional, scientific, and technical services
21 establishments
- Retail trade 19
Retail trade
19 establishments
- Administrative and support and waste management and remediation services 19
Administrative and support and waste management and remediation services
19 establishments
- Other services (except public administration) 19
Other services (except public administration)
19 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, 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
Who lives in ZIP 21084?
44.0
Median Age
51.8%
Male
48.2%
Female
3.1%
Foreign-Born
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 ZIP avg
$58,001
Per Capita Income
5.7%
Poverty Rate
5.5%
Unemployment Rate
39.2 min
Mean Commute Time
How ZIP 21084 ranks among Maryland ZIPs
Jarrettsville, MD household income vs. every Maryland ZIP code
Median household income among 419 reporting Maryland ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$121,509 Top 38% higher than 62% of 419 Maryland ZIPs
Each bar is a $20K-wide band; taller bars hold more Maryland 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
2,765housing units
2,765
Total Housing Units
2,724
Occupied Units
41
Vacant Units
2.59
Avg Household Size
Occupancy Type
$448,400
Median Home Value
+0% vs state ZIP avg
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.
- 21050
Forest Hill (21050)
18,202 residents
- 21047
Fallston (21047)
11,873 residents
- 21084
Jarrettsville (21084)
7,652 residents
- 21154 6,464
Street (21154)
6,464 residents
- 21161 5,490
White Hall (21161)
5,490 residents
- 21111 4,903
Monkton (21111)
4,903 residents
- 21013 4,653
Baldwin (21013)
4,653 residents
- 21132 2,634
Pylesville (21132)
2,634 residents
- 17321 2,238
Fawn Grove (17321)
2,238 residents
What this shows Among its immediate neighbors, ZIP 21084 ranks #3 by population - useful context the national average alone can't give.
ZIP 21084 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21051
Fork (21051)
$232,721 median income
- 21013
Baldwin (21013)
$171,354 median income
- 21047
Fallston (21047)
$157,500 median income
- 21082
Hydes (21082)
$145,571 median income
- 21111
Monkton (21111)
$136,304 median income
- 21132
Pylesville (21132)
$132,288 median income
- 21050
Forest Hill (21050)
$125,208 median income
- 21084
Jarrettsville (21084)
$121,509 median income
- 17321
Fawn Grove (17321)
$114,205 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21084, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (7,652 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Harford County
Related Areas
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.
Related
Take this with you
What to do with ZIP 21084's numbers, next.
- See how ZIP 21084 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Jarrettsville, MD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.