Luke, MD · standard
ZIP Code 21540
Allegany County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 65
- 93/sq mi Moderate-density area
- $81,250
- Median income Near-median income area
- $51,000
- Median home value Below-median home value
- 11.5%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Luke pairs an above-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- Top 36%
- household income, US ZIPs
- 1st pct
- home value, US ZIPs
- 93
- people per sq mi
- 89%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21540 against every reporting US ZIP.
ZIP code 21540 is a sparsely populated ZIP (a standard USPS delivery area) in Luke, Allegany County, Maryland, home to just 65 residents across 0.7 square miles, a density of 93 people per square mile, in the New York time zone.
With fewer than 100 residents on file, this page keeps the Census figures below and skips the multi-chart expansion used on larger ZIPs. Small-N ACS estimates are already unstable enough without padding the page around them. Median household income is $81,250.
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 →
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 21540, Luke, 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
65
Population
0.7
Area (sq mi)
93
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 21540?
44.5
Median Age
59.6%
Male
40.4%
Female
0.0%
Foreign-Born
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$81,250
Median Household Income
-29% vs state ZIP avg
$32,897
Per Capita Income
2.2%
Poverty Rate
9.8%
Unemployment Rate
How ZIP 21540 ranks among Maryland ZIPs
Luke, 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)
$81,250 24th percentile higher than 24% 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 does housing look like?
Housing stock: occupied vs vacant
47housing units
47
Total Housing Units
35
Occupied Units
12
Vacant Units
2.49
Avg Household Size
Occupancy Type
$51,000
Median Home Value
-89% vs state ZIP avg
1938
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
Nearby ZIP Codes
Want a side-by-side? Compare 21540 vs 26750 →
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21540, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
Related Areas
Frequently Asked Questions
What county is ZIP code 21540 in?
ZIP code 21540 (Luke) is located in Allegany County, Maryland. Allegany County contains multiple ZIP codes, see the full list at /counties/allegany-md.
What is the population of ZIP code 21540?
ZIP code 21540 in Luke, MD has a population of 65 according to the Census Bureau ACS 2023 estimates.
Take this with you
What to do with ZIP 21540's numbers, next.
- See how ZIP 21540 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Luke, 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.