Sudlersville, MD · standard
ZIP Code 21668
Queen Anne's County, Maryland — Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,904
- 15/sq mi
- $78,672
- Median income
- $348,400
- Median home value
- 18.2%
- Bachelor's or higher
The verdict
Sudlersville pairs an above-median household income with above-median home values, in a rural, homeowner-dominated area.
- Top 40%
- household income, US ZIPs
- Top 27%
- home value, US ZIPs
- 15
- people per sq mi
- 78%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21668 against every reporting US ZIP.
ZIP code 21668 is classified by USPS as a standard delivery area and covers roughly 128.6 square miles in Sudlersville, Queen Anne's County, Maryland. The area is home to 1,904 residents, producing a population density of 15 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 21668 against Maryland and the nation.
On the economic side, the median household income for ZIP 21668 sits at $78,672 (31% below the Maryland average), while per-capita income is $38,133. The poverty rate stands at 12.3% and the unemployment rate at 5.5%. On housing, the median home value is $348,400 (22% below the state average) with median rent at $1,037 per month, and 77.9% of occupied units are owner-occupied, a direct signal of whether 21668 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 18.2% of adults hold a bachelor's degree or higher, the median age is 49.4, and the average commute is 36 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Queen Anne's County, so you can benchmark 21668 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 21668
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 21668.
- Construction
Construction
7 establishments
- Wholesale trade
Wholesale trade
5 establishments
- Retail trade
Retail trade
5 establishments
- Other services (except public administration)
Other services (except public administration)
4 establishments
- Educational services
Educational services
3 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 + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 21668, Sudlersville, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
1,904
Population
128.6
Area (sq mi)
15
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 21668?
49.4
Median Age
47.1%
Male
52.9%
Female
2.7%
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?
$78,672
Median Household Income
-31% vs state
$38,133
Per Capita Income
12.3%
Poverty Rate
5.5%
Unemployment Rate
36.0 min
Mean Commute Time
How ZIP 21668 ranks nationally
Household income vs. every US ZIP code
Median household income — the full national distribution, with this ZIP marked
$78,672 Top 40% higher than 60% of 30,318 US ZIPs
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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
803
Total Housing Units
773
Occupied Units
30
Vacant Units
2.59
Avg Household Size
Occupancy Type
$348,400
Median Home Value
-22% vs state
$1,037
Median Rent
1985
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 33 business establishments in ZIP 21668, employing approximately 301 people with a combined annual payroll of $19,460,000.
33
Businesses
301
Employees
$19.5M
Annual Payroll
6
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 7 | 21.2% |
| Wholesale trade | 5 | 15.2% |
| Retail trade | 5 | 15.2% |
| Other services (except public administration) | 4 | 12.1% |
| Educational services | 3 | 9.1% |
| Accommodation and food services | 3 | 9.1% |
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 21668 vs 21607 →
ZIP 21668 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21651
Millington (21651)
2,898 residents
- 21623
Church Hill (21623)
2,111 residents
- 21635
Galena (21635)
2,098 residents
- 21668
Sudlersville (21668)
1,904 residents
- 21649
Marydel (21649)
1,858 residents
- 21640
Henderson (21640)
1,632 residents
- 19964
Marydel (19964)
1,340 residents
- 21607 583
Barclay (21607)
583 residents
- 21628 556
Crumpton (21628)
556 residents
What this shows Among its immediate neighbors, ZIP 21668 ranks #4 by population — useful context the national average alone can't give.
ZIP 21668 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21628
Crumpton (21628)
$115,417 median income
- 21635
Galena (21635)
$101,618 median income
- 19964
Marydel (19964)
$99,402 median income
- 21607
Barclay (21607)
$91,250 median income
- 21668
Sudlersville (21668)
$78,672 median income
- 21623
Church Hill (21623)
$78,345 median income
- 21651
Millington (21651)
$74,063 median income
- 21649
Marydel (21649)
$68,542 median income
- 21640
Henderson (21640)
$53,558 median income
What this shows By household income, ZIP 21668 ranks #5 of 9 neighboring ZIPs — local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 21607 | Barclay, MD | 583 | 4.0 mi |
| 21651 | Millington, MD | 2,898 | 4.7 mi |
| 21644 | Ingleside, MD | 111 | 5.5 mi |
| 21628 | Crumpton, MD | 556 | 4.8 mi |
| 21649 | Marydel, MD | 1,858 | 5.9 mi |
| 21640 | Henderson, MD | 1,632 | 8.5 mi |
| 21635 | Galena, MD | 2,098 | 10.3 mi |
| 21650 | Massey, MD | 238 | 8.9 mi |
| 21623 | Church Hill, MD | 2,111 | 7.5 mi |
| 19964 | Marydel, DE | 1,340 | 9.8 mi |
More ZIP Codes in Queen Anne's County
Related Areas
Frequently Asked Questions
What county is ZIP code 21668 in? ▼
What is the population of ZIP code 21668? ▼
What is the median household income in ZIP 21668? ▼
What is the average home value in ZIP 21668? ▼
What is the demographic makeup of ZIP 21668? ▼
How many businesses are in ZIP code 21668? ▼
What are the main industries in ZIP code 21668? ▼
What is the education level in ZIP code 21668? ▼
What is the average commute time in ZIP 21668? ▼
What percentage of residents own vs. rent in ZIP 21668? ▼
What is the poverty rate in ZIP code 21668? ▼
ZIP Code Research Guides
Official Data Resources for Sudlersville, MD
Verify and explore additional data for this area using these official government sources.
Read our methodology to see how this data is sourced, computed, and verified.