Prince Frederick, MD · standard
ZIP Code 20678
Calvert County, Maryland — Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 11,045
- 100/sq mi
- $125,732
- Median income
- $455,100
- Median home value
- 30.3%
- Bachelor's or higher
The verdict
Prince Frederick pairs a top-decile household income with upper-quartile home values, in a rural, homeowner-dominated area.
- Top 8%
- household income, US ZIPs
- Top 16%
- home value, US ZIPs
- 100
- people per sq mi
- 78%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20678 against every reporting US ZIP.
ZIP code 20678 is classified by USPS as a standard delivery area and covers roughly 110.8 square miles in Prince Frederick, Calvert County, Maryland. The area is home to 11,045 residents, producing a population density of 100 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 20678 against Maryland and the nation.
On the economic side, the median household income for ZIP 20678 sits at $125,732 (10% above the Maryland average), while per-capita income is $54,751. The poverty rate stands at 7.5% and the unemployment rate at 2.5%. On housing, the median home value is $455,100 (2% above the state average) with median rent at $1,388 per month, and 78.4% of occupied units are owner-occupied, a direct signal of whether 20678 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 30.3% of adults hold a bachelor's degree or higher, the median age is 38.4, and the average commute is 40 minutes. We also surface 9 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Calvert County, so you can benchmark 20678 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 20678
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 20678.
- Health care and social assistance
Health care and social assistance
90 establishments
- Retail trade
Retail trade
68 establishments
- Other services (except public administration)
Other services (except public administration)
64 establishments
- Construction
Construction
53 establishments
- Accommodation and food services
Accommodation and food services
52 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 20678, Prince Frederick, 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
11,045
Population
110.8
Area (sq mi)
100
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 20678?
38.4
Median Age
50.9%
Male
49.1%
Female
6.6%
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?
$125,732
Median Household Income
+10% vs state
$54,751
Per Capita Income
7.5%
Poverty Rate
2.5%
Unemployment Rate
39.9 min
Mean Commute Time
How ZIP 20678 ranks nationally
Household income vs. every US ZIP code
Median household income — the full national distribution, with this ZIP marked
$125,732 Top 8% higher than 92% 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?
5,183
Total Housing Units
4,858
Occupied Units
325
Vacant Units
2.56
Avg Household Size
Occupancy Type
$455,100
Median Home Value
+2% vs state
$1,388
Median Rent
1993
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
+10.1%
YoY Change (2024)
232
HPI Index (2000 = 100)
+132%
Total Change Since 2000
Home values in ZIP 20678 have increased 10.1% over the past year (2024). Since 2000, this ZIP has seen +132% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +5.0% | 178 |
| 2021 | +9.3% | 195 |
| 2022 | +9.5% | 213 |
| 2023 | -1.0% | 211 |
| 2024 | +10.1% | 232 |
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 487 business establishments in ZIP 20678, employing approximately 7,565 people with a combined annual payroll of $377,323,000.
487
Businesses
7,565
Employees
$377.3M
Annual Payroll
16
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Health care and social assistance | 90 | 18.5% |
| Retail trade | 68 | 14.0% |
| Other services (except public administration) | 64 | 13.1% |
| Construction | 53 | 10.9% |
| Accommodation and food services | 52 | 10.7% |
| Professional, scientific, and technical services | 36 | 7.4% |
| Finance and insurance | 30 | 6.2% |
| Real estate and rental and leasing | 20 | 4.1% |
| Administrative and support and waste management and remediation services | 20 | 4.1% |
| Transportation and warehousing | 12 | 2.5% |
| Wholesale trade | 11 | 2.3% |
| Information | 7 | 1.4% |
| Arts, entertainment, and recreation | 7 | 1.4% |
| Manufacturing | 6 | 1.2% |
| Educational services | 5 | 1.0% |
| Management of companies and enterprises | 4 | 0.8% |
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 20678 vs 20676 →
ZIP 20678 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 20659
Mechanicsville (20659)
23,498 residents
- 20639
Huntingtown (20639)
14,227 residents
- 20678
Prince Frederick (20678)
11,045 residents
- 20732
Chesapeake Beach (20732)
9,919 residents
- 20685 6,471
Saint Leonard (20685)
6,471 residents
- 20676 3,871
Port Republic (20676)
3,871 residents
- 20689 1,694
Sunderland (20689)
1,694 residents
- 20608 919
Aquasco (20608)
919 residents
- 20615 405
Broomes Island (20615)
405 residents
What this shows Among its immediate neighbors, ZIP 20678 ranks #3 by population — useful context the national average alone can't give.
ZIP 20678 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 20689
Sunderland (20689)
$161,833 median income
- 20639
Huntingtown (20639)
$161,422 median income
- 20676
Port Republic (20676)
$156,657 median income
- 20732
Chesapeake Beach (20732)
$140,304 median income
- 20678
Prince Frederick (20678)
$125,732 median income
- 20659
Mechanicsville (20659)
$121,654 median income
- 20685
Saint Leonard (20685)
$119,135 median income
- 20608
Aquasco (20608)
$82,083 median income
- 20612 $41,118
Benedict (20612)
$41,118 median income
What this shows By household income, ZIP 20678 ranks #5 of 9 neighboring ZIPs — local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 20676 | Port Republic, MD | 3,871 | 3.8 mi |
| 20612 | Benedict, MD | 261 | 4.2 mi |
| 20639 | Huntingtown, MD | 14,227 | 6.0 mi |
| 20615 | Broomes Island, MD | 405 | 7.6 mi |
| 20685 | Saint Leonard, MD | 6,471 | 7.2 mi |
| 20689 | Sunderland, MD | 1,694 | 9.8 mi |
| 20608 | Aquasco, MD | 919 | 7.2 mi |
| 20732 | Chesapeake Beach, MD | 9,919 | 10.0 mi |
| 20659 | Mechanicsville, MD | 23,498 | 9.8 mi |
More ZIP Codes in Calvert County
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Frequently Asked Questions
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What is the population of ZIP code 20678? ▼
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How many businesses are in ZIP code 20678? ▼
What are the main industries in ZIP code 20678? ▼
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What percentage of residents own vs. rent in ZIP 20678? ▼
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ZIP Code Research Guides
Official Data Resources for Prince Frederick, 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.