Grasonville, MD · standard
ZIP Code 21638
Queen Anne's County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 4,934
- 195/sq mi High-density area
- $140,086
- Median income Above-median income area
- $569,200
- Median home value Above-median home value
- 46.7%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Grasonville pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.
- Top 5%
- household income, US ZIPs
- Top 10%
- home value, US ZIPs
- 195
- people per sq mi
- 85%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21638 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 21638 (Grasonville, MD) rose +10.5% from 2023 to 2024. The all-transactions index moved from 234.3 in 2023 to 258.9 in 2024 (2000 = 100).
ZIP code 21638 covers 25.3 square miles in Grasonville, Queen Anne's County, Maryland (a standard USPS delivery area), with a modest 4,934 residents on file, a density of 195 people per square mile, in the New York time zone.
ZIP 21638 skews affluent, with a median household income of $140,086 (23% above the average Maryland ZIP), while per-capita income is $60,714. The poverty rate is 8.4%, with unemployment at 2.4%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $569,200 (27% above the average Maryland ZIP), while 84.5% of occupied homes are owner-occupied and median rent is $1,692.
A solid share of residents have a four-year degree: 46.7% of adults hold a bachelor's degree or higher, the median age is 42.3, and the average commute is 35 minutes. The page also surfaces 6 ZIP codes within roughly 10 miles and 6 more in Queen Anne's County, so 21638 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 21638
Top 5 sectors by establishment count in Grasonville, MD
Which industries have the most business establishments in ZIP 21638.
- Professional, scientific, and technical services
Professional, scientific, and technical services
19 establishments
- Construction
Construction
15 establishments
- Accommodation and food services
Accommodation and food services
15 establishments
- Other services (except public administration)
Other services (except public administration)
14 establishments
- Retail trade
Retail trade
13 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 21638, Grasonville, 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
4,934
Population
25.3
Area (sq mi)
195
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 21638?
42.3
Median Age
49.9%
Male
50.1%
Female
5.7%
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?
$140,086
Median Household Income
+23% vs state ZIP avg
$60,714
Per Capita Income
8.4%
Poverty Rate
2.4%
Unemployment Rate
35.2 min
Mean Commute Time
How ZIP 21638 ranks among Maryland ZIPs
Grasonville, 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)
$140,086 Top 24% higher than 76% 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
2,360housing units
2,360
Total Housing Units
1,916
Occupied Units
444
Vacant Units
2.81
Avg Household Size
Occupancy Type
$569,200
Median Home Value
+27% vs state ZIP avg
$1,692
Median Rent
1995
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
+10.5%
YoY Change (2024)
259
HPI Index (2000 = 100)
+159%
Total Change Since 2000
Home values in ZIP 21638 have increased 10.5% over the past year (2024). Since 2000, this ZIP has seen +159% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +4.5% | 180 |
| 2021 | +8.6% | 195 |
| 2022 | +11.3% | 217 |
| 2023 | +7.9% | 234 |
| 2024 | +10.5% | 259 |
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 125 business establishments in ZIP 21638, employing approximately 1,310 people with a combined annual payroll of $60,970,000.
125
Businesses
1,310
Employees
$61.0M
Annual Payroll
14
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Professional, scientific, and technical services | 19 | 15.2% |
| Construction | 15 | 12.0% |
| Accommodation and food services | 15 | 12.0% |
| Other services (except public administration) | 14 | 11.2% |
| Retail trade | 13 | 10.4% |
| Administrative and support and waste management and remediation services | 11 | 8.8% |
| Wholesale trade | 7 | 5.6% |
| Transportation and warehousing | 6 | 4.8% |
| Real estate and rental and leasing | 6 | 4.8% |
| Finance and insurance | 4 | 3.2% |
| Health care and social assistance | 4 | 3.2% |
| Manufacturing | 3 | 2.4% |
| Educational services | 3 | 2.4% |
| Arts, entertainment, and recreation | 3 | 2.4% |
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 21638 vs 21658 →
ZIP 21638 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21666
Stevensville (21666)
12,309 residents
- 21619
Chester (21619)
5,848 residents
- 21638
Grasonville (21638)
4,934 residents
- 21658 3,862
Queenstown (21658)
3,862 residents
- 21679 483
Wye Mills (21679)
483 residents
- 21647 289
Mcdaniel (21647)
289 residents
- 21624 143
Claiborne (21624)
143 residents
What this shows Among its immediate neighbors, ZIP 21638 ranks #3 by population - useful context the national average alone can't give.
ZIP 21638 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21638
Grasonville (21638)
$140,086 median income
- 21658
Queenstown (21658)
$128,274 median income
- 21666
Stevensville (21666)
$123,645 median income
- 21679
Wye Mills (21679)
$119,821 median income
- 21647
Mcdaniel (21647)
$113,472 median income
- 21619
Chester (21619)
$107,639 median income
- 21624
Claiborne (21624)
$89,375 median income
What this shows By household income, ZIP 21638 ranks the highest of 7 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 21638, 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 (4,934 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Queen Anne's County
Related Areas
Frequently Asked Questions
What county is ZIP code 21638 in?
ZIP code 21638 (Grasonville) is located in Queen Anne's County, Maryland. Queen Anne's County contains multiple ZIP codes, see the full list at /counties/queen-annes-md.
What is the population of ZIP code 21638?
ZIP code 21638 in Grasonville, MD has a population of 4,934 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21638?
The median household income in ZIP 21638 is $140,086, which is 84% above the national average of $76,288.
What is the average home value in ZIP 21638?
The median home value in ZIP 21638 is $569,200, which is 105% above the national average of $278,155.
What is the demographic makeup of ZIP 21638?
The largest racial group in ZIP 21638 is White at 78.9%. Hispanic or Latino residents make up 5.8% of the population.
How many businesses are in ZIP code 21638?
ZIP code 21638 has 125 business establishments employing approximately 1,310 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21638?
The top industries by establishment count in ZIP 21638 are: Professional, scientific, and technical services (19), Construction (15), Accommodation and food services (15). There are 14 industry sectors represented in total.
How have home values changed in ZIP code 21638?
According to the FHFA House Price Index, home values in ZIP 21638 increased by 10.5% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 159%. 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 21638?
In ZIP code 21638, 66.8% of residents aged 25+ have a high school diploma or higher, and 46.7% 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 21638?
The mean commute time for workers in ZIP code 21638 is 35.2 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 21638?
In ZIP code 21638, approximately 84.5% of occupied housing units are owner-occupied and 15.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21638?
The poverty rate in ZIP code 21638 is 8.4% 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 21638's numbers, next.
- See how ZIP 21638 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Grasonville, 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.