PlainZIP

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 covers 128.6 square miles in Sudlersville, Queen Anne's County, Maryland (a standard USPS delivery area), with a modest 1,904 residents on file, a density of 15 people per square mile, in the New York time zone.

ZIP 21668 lands in the middle-income range, with a median household income of $78,672 (31% below the Maryland average), while per-capita income is $38,133. 12.3% of residents live below the poverty line, and the unemployment rate reads 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.

Educational attainment sits below the national norm: 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 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 21668

Top 5 sectors by establishment count in Sudlersville, MD

Which industries have the most business establishments in ZIP 21668.

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 · ZIP Code Business Patterns (ZBP) As of 2023

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 21668, Sudlersville, 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

1,904

Population

128.6

Area (sq mi)

15

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 21668?

49.4

Median Age

47.1%

Male

52.9%

Female

2.7%

Foreign-Born

White 90.8%
African American 3.3%
Asian 0.0%
American Indian or Alaska Native 0.4%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.1%
Hispanic or Latino 3.5%

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

Sudlersville, MD 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

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

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?

High School Graduate or Higher 62.8%
Bachelor's Degree or Higher 18.2%

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

Owner 77.9%
Renter 22.1%

$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.

residents

What this shows Among its immediate neighbors, ZIP 21668 ranks #4 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 21668 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

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.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
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

21666 standard
Stevensville, MD
Pop: 12,309
21617 standard
Centreville, MD
Pop: 9,907
21619 standard
Chester, MD
Pop: 5,848
21638 standard
Grasonville, MD
Pop: 4,934
21658 standard
Queenstown, MD
Pop: 3,862
21623 standard
Church Hill, MD
Pop: 2,111

Related Areas

Queen Anne's County Sudlersville, MD Maryland

Frequently Asked Questions

What county is ZIP code 21668 in? ▼
ZIP code 21668 (Sudlersville) 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 21668? ▼
ZIP code 21668 in Sudlersville, MD has a population of 1,904 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21668? ▼
The median household income in ZIP 21668 is $78,672, which is 3% above the national average of $76,288.
What is the average home value in ZIP 21668? ▼
The median home value in ZIP 21668 is $348,400, which is 25% above the national average of $278,155.
What is the demographic makeup of ZIP 21668? ▼
The largest racial group in ZIP 21668 is White at 90.8%. Hispanic or Latino residents make up 3.5% of the population.
How many businesses are in ZIP code 21668? ▼
ZIP code 21668 has 33 business establishments employing approximately 301 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21668? ▼
The top industries by establishment count in ZIP 21668 are: Construction (7), Wholesale trade (5), Retail trade (5). There are 6 industry sectors represented in total.
What is the education level in ZIP code 21668? ▼
In ZIP code 21668, 62.8% of residents aged 25+ have a high school diploma or higher, and 18.2% 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 21668? ▼
The mean commute time for workers in ZIP code 21668 is 36.0 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 21668? ▼
In ZIP code 21668, approximately 77.9% of occupied housing units are owner-occupied and 22.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21668? ▼
The poverty rate in ZIP code 21668 is 12.3% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.