PlainZIP

Port Republic, MD · standard

ZIP Code 20676

Calvert County, Maryland — Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

3,871
90/sq mi
$156,657
Median income
$509,900
Median home value
37.9%
Bachelor's or higher

The verdict

Port Republic pairs a top-decile household income with upper-quartile home values, in a rural, homeowner-dominated area.

Top 3%
household income, US ZIPs
Top 13%
home value, US ZIPs
90
people per sq mi
87%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20676 against every reporting US ZIP.

ZIP code 20676 is classified by USPS as a standard delivery area and covers roughly 42.9 square miles in Port Republic, Calvert County, Maryland. The area is home to 3,871 residents, producing a population density of 90 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 20676 against Maryland and the nation.

On the economic side, the median household income for ZIP 20676 sits at $156,657 (37% above the Maryland average), while per-capita income is $61,611. The poverty rate stands at 4.5% and the unemployment rate at 2.1%. On housing, the median home value is $509,900 (14% above the state average) with median rent at $1,766 per month, and 87.1% of occupied units are owner-occupied, a direct signal of whether 20676 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 37.9% of adults hold a bachelor's degree or higher, the median age is 45.1, and the average commute is —. We also surface 7 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Calvert County, so you can benchmark 20676 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 20676

Top 5 sectors by establishment count

Which industries have the most business establishments in ZIP 20676.

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 + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 20676, Port Republic, 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

3,871

Population

42.9

Area (sq mi)

90

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 20676?

45.1

Median Age

53.4%

Male

46.6%

Female

2.5%

Foreign-Born

White 81.3%
African American 11.1%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 7.7%
Hispanic or Latino 2.3%

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?

$156,657

Median Household Income

+37% vs state

$61,611

Per Capita Income

4.5%

Poverty Rate

2.1%

Unemployment Rate

How ZIP 20676 ranks nationally

Household income vs. every US ZIP code

Median household income — the full national distribution, with this ZIP marked

$156,657 Top 3% higher than 97% 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%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). This entry sits in this band. $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 63.0%
Bachelor's Degree or Higher 37.9%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

1,378

Total Housing Units

1,252

Occupied Units

126

Vacant Units

2.57

Avg Household Size

Occupancy Type

Owner 87.1%
Renter 12.9%

$509,900

Median Home Value

+14% vs state

$1,766

Median Rent

1986

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

+1.6%

YoY Change (2024)

226

HPI Index (2000 = 100)

+126%

Total Change Since 2000

Home values in ZIP 20676 have increased 1.6% over the past year (2024). Since 2000, this ZIP has seen +126% cumulative appreciation.

Year Annual Change HPI Index
2020 +4.0% 176
2021 +10.9% 195
2022 +14.0% 223
2023 -0.0% 223
2024 +1.6% 226

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 37 business establishments in ZIP 20676, employing approximately 141 people with a combined annual payroll of $8,145,000.

37

Businesses

141

Employees

$8.1M

Annual Payroll

4

Industry Sectors

Industry Establishments % of Total
Construction 12 32.4%
Other services (except public administration) 6 16.2%
Retail trade 5 13.5%
Administrative and support and waste management and remediation services 3 8.1%

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 20676 vs 20615 →

ZIP 20676 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 20676 ranks #6 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 20676 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 20676 ranks #3 of 7 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
20615 Broomes Island, MD 405 4.8 mi
20685 Saint Leonard, MD 6,471 3.9 mi
20678 Prince Frederick, MD 11,045 3.8 mi
20612 Benedict, MD 261 7.2 mi
20636 Hollywood, MD 9,937 9.6 mi
20639 Huntingtown, MD 14,227 8.8 mi
20657 Lusby, MD 20,483 9.1 mi

More ZIP Codes in Calvert County

20657 standard
Lusby, MD
Pop: 20,483
20639 standard
Huntingtown, MD
Pop: 14,227
20678 standard
Prince Frederick, MD
Pop: 11,045
20732 standard
Chesapeake Beach, MD
Pop: 9,919
20736 standard
Owings, MD
Pop: 8,904
20754 standard
Dunkirk, MD
Pop: 6,951

Related Areas

Calvert County Port Republic, MD Maryland

Frequently Asked Questions

What county is ZIP code 20676 in? ▼
ZIP code 20676 (Port Republic) is located in Calvert County, Maryland. Calvert County contains multiple ZIP codes, see the full list at /counties/calvert-md.
What is the population of ZIP code 20676? ▼
ZIP code 20676 in Port Republic, MD has a population of 3,871 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 20676? ▼
The median household income in ZIP 20676 is $156,657, which is 105% above the national average of $76,288.
What is the average home value in ZIP 20676? ▼
The median home value in ZIP 20676 is $509,900, which is 83% above the national average of $278,155.
What is the demographic makeup of ZIP 20676? ▼
The largest racial group in ZIP 20676 is White at 81.3%. Hispanic or Latino residents make up 2.3% of the population.
How many businesses are in ZIP code 20676? ▼
ZIP code 20676 has 37 business establishments employing approximately 141 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 20676? ▼
The top industries by establishment count in ZIP 20676 are: Construction (12), Other services (except public administration) (6), Retail trade (5). There are 4 industry sectors represented in total.
How have home values changed in ZIP code 20676? ▼
According to the FHFA House Price Index, home values in ZIP 20676 increased by 1.6% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 126%. 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 20676? ▼
In ZIP code 20676, 63.0% of residents aged 25+ have a high school diploma or higher, and 37.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 20676? ▼
In ZIP code 20676, approximately 87.1% of occupied housing units are owner-occupied and 12.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 20676? ▼
The poverty rate in ZIP code 20676 is 4.5% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

ZIP Code Research Guides

Reading Census Demographics
How to interpret population, income, and education data from the Census Bureau.
Understanding ZIP Code Data
What ZIP codes are, how ZCTAs differ, and what the data reveals.
Best ZIP Codes for Families
Key factors to evaluate when choosing a family-friendly neighborhood.
ZIP Codes for Relocation
Data-driven tips for evaluating ZIP codes before a move.

Official Data Resources for Port Republic, MD

Verify and explore additional data for this area using these official government sources.

U.S. Census Bureau
Official demographic, economic, and housing data from the American Community Survey.
HUD Fair Market Rents
Department of Housing and Urban Development rental cost estimates by metropolitan area.
FBI Uniform Crime Reports
Official crime statistics compiled from law enforcement agencies nationwide.
FHFA House Price Index
Federal Housing Finance Agency home value trends based on repeat sales and appraisals.

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