Linthicum Heights, MD · standard
ZIP Code 21090
Anne Arundel County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 9,784
- 573/sq mi High-density area
- $138,119
- Median income Above-median income area
- $410,400
- Median home value Above-median home value
- 42.8%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Linthicum Heights pairs a top-decile household income with upper-quartile home values, in a low-density, homeowner-dominated area.
- Top 5%
- household income, US ZIPs
- Top 20%
- home value, US ZIPs
- 573
- people per sq mi
- 83%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21090 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 21090 (Linthicum Heights, MD) rose +8.3% from 2023 to 2024. The all-transactions index moved from 243.4 in 2023 to 263.7 in 2024 (2000 = 100).
ZIP code 21090 is a mid-sized community (a standard USPS delivery area) in Linthicum Heights, Anne Arundel County, Maryland, home to 9,784 residents across 17.1 square miles, a density of 573 people per square mile, in the New York time zone.
ZIP 21090 skews affluent, with a median household income of $138,119 (21% above the average Maryland ZIP), while per-capita income is $55,969. Both reported hardship measures are comparatively low in absolute terms: poverty is 3.5% and unemployment is 2.5%. Median home value is $410,400 (8% below the average Maryland ZIP) and median rent is $2,055; 83.2% of occupied homes are owner-occupied.
A solid share of residents have a four-year degree: 42.8% of adults hold a bachelor's degree or higher, the median age is 36.8, and the average commute is 24 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Anne Arundel County, so 21090 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 21090
Top 5 sectors by establishment count in Linthicum Heights, MD
Which industries have the most business establishments in ZIP 21090.
- Accommodation and food services
Accommodation and food services
81 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
71 establishments
- Construction
Construction
63 establishments
- Administrative and support and waste management and remediation services
Administrative and support and waste management and remediation services
44 establishments
- Health care and social assistance
Health care and social assistance
44 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 21090, Linthicum Heights, 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
9,784
Population
17.1
Area (sq mi)
573
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 21090?
36.8
Median Age
53.0%
Male
47.0%
Female
6.1%
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?
$138,119
Median Household Income
+21% vs state ZIP avg
$55,969
Per Capita Income
3.5%
Poverty Rate
2.5%
Unemployment Rate
23.5 min
Mean Commute Time
How ZIP 21090 ranks among Maryland ZIPs
Linthicum Heights, 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)
$138,119 Top 26% higher than 74% 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
4,255housing units
4,255
Total Housing Units
3,979
Occupied Units
276
Vacant Units
2.66
Avg Household Size
Occupancy Type
$410,400
Median Home Value
-8% vs state ZIP avg
$2,055
Median Rent
1959
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
+8.3%
YoY Change (2024)
264
HPI Index (2000 = 100)
+164%
Total Change Since 2000
Home values in ZIP 21090 have increased 8.3% over the past year (2024). Since 2000, this ZIP has seen +164% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +3.8% | 201 |
| 2021 | +7.7% | 216 |
| 2022 | +10.5% | 239 |
| 2023 | +2.0% | 243 |
| 2024 | +8.3% | 264 |
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 554 business establishments in ZIP 21090, employing approximately 25,070 people with a combined annual payroll of $2,252,332,000.
554
Businesses
25,070
Employees
$2.3B
Annual Payroll
16
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Accommodation and food services | 81 | 14.6% |
| Professional, scientific, and technical services | 71 | 12.8% |
| Construction | 63 | 11.4% |
| Administrative and support and waste management and remediation services | 44 | 7.9% |
| Health care and social assistance | 44 | 7.9% |
| Wholesale trade | 40 | 7.2% |
| Other services (except public administration) | 37 | 6.7% |
| Finance and insurance | 36 | 6.5% |
| Retail trade | 35 | 6.3% |
| Transportation and warehousing | 26 | 4.7% |
| Management of companies and enterprises | 24 | 4.3% |
| Real estate and rental and leasing | 20 | 3.6% |
| Manufacturing | 13 | 2.4% |
| Information | 9 | 1.6% |
| Educational services | 5 | 0.9% |
| Arts, entertainment, and recreation | 5 | 0.9% |
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 21090 vs 21240 →
ZIP 21090 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21061
Glen Burnie (21061)
53,684 residents
- 21225
Brooklyn (21225)
33,545 residents
- 21227
Halethorpe (21227)
33,534 residents
- 21144
Severn (21144)
31,884 residents
- 21223
Baltimore (21223)
26,366 residents
- 21075
Elkridge (21075)
26,344 residents
- 21076 12,952
Hanover (21076)
12,952 residents
- 21090 9,784
Linthicum Heights (21090)
9,784 residents
- 21250 3,205
Baltimore (21250)
3,205 residents
What this shows Among its immediate neighbors, ZIP 21090 ranks #8 by population - useful context the national average alone can't give.
ZIP 21090 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21076
Hanover (21076)
$146,869 median income
- 21090
Linthicum Heights (21090)
$138,119 median income
- 21144
Severn (21144)
$136,684 median income
- 21075
Elkridge (21075)
$135,303 median income
- 21061
Glen Burnie (21061)
$87,751 median income
- 21227
Halethorpe (21227)
$85,986 median income
- 21225 $54,020
Brooklyn (21225)
$54,020 median income
- 21223 $45,840
Baltimore (21223)
$45,840 median income
What this shows By household income, ZIP 21090 ranks #2 of 8 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 21240 | Baltimore, MD | 0 | 2.4 mi |
| 21227 | Halethorpe, MD | 33,534 | 2.2 mi |
| 21225 | Brooklyn, MD | 33,545 | 3.1 mi |
| 21077 | Harmans, MD | 224 | 4.0 mi |
| 21061 | Glen Burnie, MD | 53,684 | 3.9 mi |
| 21250 | Baltimore, MD | 3,205 | 3.9 mi |
| 21075 | Elkridge, MD | 26,344 | 4.5 mi |
| 21223 | Baltimore, MD | 26,366 | 5.2 mi |
| 21076 | Hanover, MD | 12,952 | 4.1 mi |
| 21144 | Severn, MD | 31,884 | 6.1 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21090, 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 (9,784 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Anne Arundel County
Related Areas
Frequently Asked Questions
What county is ZIP code 21090 in?
ZIP code 21090 (Linthicum Heights) is located in Anne Arundel County, Maryland. Anne Arundel County contains multiple ZIP codes, see the full list at /counties/anne-arundel-md.
What is the population of ZIP code 21090?
ZIP code 21090 in Linthicum Heights, MD has a population of 9,784 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21090?
The median household income in ZIP 21090 is $138,119, which is 81% above the national average of $76,288.
What is the average home value in ZIP 21090?
The median home value in ZIP 21090 is $410,400, which is 48% above the national average of $278,155.
What is the demographic makeup of ZIP 21090?
The largest racial group in ZIP 21090 is White at 75.7%. Hispanic or Latino residents make up 5.7% of the population.
How many businesses are in ZIP code 21090?
ZIP code 21090 has 554 business establishments employing approximately 25,070 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21090?
The top industries by establishment count in ZIP 21090 are: Accommodation and food services (81), Professional, scientific, and technical services (71), Construction (63). There are 16 industry sectors represented in total.
How have home values changed in ZIP code 21090?
According to the FHFA House Price Index, home values in ZIP 21090 increased by 8.3% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 164%. 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 21090?
In ZIP code 21090, 62.7% of residents aged 25+ have a high school diploma or higher, and 42.8% 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 21090?
The mean commute time for workers in ZIP code 21090 is 23.5 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 21090?
In ZIP code 21090, approximately 83.2% of occupied housing units are owner-occupied and 16.8% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21090?
The poverty rate in ZIP code 21090 is 3.5% 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 21090's numbers, next.
- See how ZIP 21090 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Linthicum Heights, 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.