Gainesville, VA · standard
ZIP Code 20155
Prince William County, Virginia - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 29,411
- 393/sq mi High-density area
- $164,279
- Median income Above-median income area
- $659,100
- Median home value Above-median home value
- 57.2%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Gainesville pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated area.
- Top 3%
- household income, US ZIPs
- Top 7%
- home value, US ZIPs
- 393
- people per sq mi
- 86%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20155 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 20155 (Gainesville, VA) rose +16.7% from 2023 to 2024. The all-transactions index moved from 250.1 in 2023 to 291.9 in 2024 (2000 = 100).
ZIP code 20155 is a densely settled ZIP (a standard USPS delivery area) in Gainesville, Prince William County, Virginia, with 29,411 residents across 74.8 square miles, a density of 393 people per square mile, in the New York time zone.
ZIP 20155 skews affluent, with a median household income of $164,279 (92% above the average Virginia ZIP), while per-capita income is $63,275. Both reported hardship measures are comparatively low in absolute terms: poverty is 2.7% and unemployment is 2.9%. Housing is both higher-cost and owner-heavy: median home value is $659,100 (97% above the average Virginia ZIP), while 85.9% of occupied homes are owner-occupied and median rent is $2,642.
This is a highly-educated ZIP: 57.2% of adults hold a bachelor's degree or higher, the median age is 40.4, and the average commute is 33 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Prince William County, so 20155 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 20155
Top 5 sectors by establishment count in Gainesville, VA
Which industries have the most business establishments in ZIP 20155.
- Professional, scientific, and technical services
Professional, scientific, and technical services
169 establishments
- Health care and social assistance
Health care and social assistance
146 establishments
- Retail trade
Retail trade
105 establishments
- Accommodation and food services
Accommodation and food services
89 establishments
- Other services (except public administration)
Other services (except public administration)
77 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 20155, Gainesville, VA · 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
29,411
Population
74.8
Area (sq mi)
393
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 20155?
40.4
Median Age
49.4%
Male
50.6%
Female
20.8%
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?
$164,279
Median Household Income
+92% vs state ZIP avg
$63,275
Per Capita Income
2.7%
Poverty Rate
2.9%
Unemployment Rate
33.3 min
Mean Commute Time
How ZIP 20155 ranks among Virginia ZIPs
Gainesville, VA household income vs. every Virginia ZIP code
Median household income among 804 reporting Virginia ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$164,279 Top 6% higher than 94% of 804 Virginia ZIPs
Each bar is a $20K-wide band; taller bars hold more Virginia 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
13,004housing units
13,004
Total Housing Units
12,660
Occupied Units
344
Vacant Units
2.94
Avg Household Size
Occupancy Type
$659,100
Median Home Value
+97% vs state ZIP avg
$2,642
Median Rent
2005
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
+16.7%
YoY Change (2024)
292
HPI Index (2000 = 100)
+192%
Total Change Since 2000
Home values in ZIP 20155 have increased 16.7% over the past year (2024). Since 2000, this ZIP has seen +192% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +3.3% | 191 |
| 2021 | +11.7% | 213 |
| 2022 | +11.8% | 238 |
| 2023 | +5.1% | 250 |
| 2024 | +16.7% | 292 |
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 912 business establishments in ZIP 20155, employing approximately 15,049 people with a combined annual payroll of $712,740,000.
912
Businesses
15,049
Employees
$712.7M
Annual Payroll
15
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Professional, scientific, and technical services | 169 | 18.5% |
| Health care and social assistance | 146 | 16.0% |
| Retail trade | 105 | 11.5% |
| Accommodation and food services | 89 | 9.8% |
| Other services (except public administration) | 77 | 8.4% |
| Construction | 76 | 8.3% |
| Real estate and rental and leasing | 55 | 6.0% |
| Finance and insurance | 43 | 4.7% |
| Administrative and support and waste management and remediation services | 38 | 4.2% |
| Transportation and warehousing | 37 | 4.1% |
| Arts, entertainment, and recreation | 19 | 2.1% |
| Wholesale trade | 17 | 1.9% |
| Educational services | 16 | 1.8% |
| Manufacturing | 12 | 1.3% |
| Information | 10 | 1.1% |
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 20155 vs 20169 →
ZIP 20155 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 20110
Manassas (20110)
43,876 residents
- 20120
Centreville (20120)
40,695 residents
- 20109
Manassas (20109)
37,265 residents
- 20155
Gainesville (20155)
29,411 residents
- 20136
Bristow (20136)
28,498 residents
- 20169
Haymarket (20169)
19,801 residents
- 20187 15,252
Warrenton (20187)
15,252 residents
- 20181 7,877
Nokesville (20181)
7,877 residents
- 20198 2,492
The Plains (20198)
2,492 residents
What this shows Among its immediate neighbors, ZIP 20155 ranks #4 by population - useful context the national average alone can't give.
ZIP 20155 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 20169
Haymarket (20169)
$203,051 median income
- 20137
Broad Run (20137)
$191,974 median income
- 20136
Bristow (20136)
$183,750 median income
- 20187
Warrenton (20187)
$176,435 median income
- 20143
Catharpin (20143)
$176,250 median income
- 20155
Gainesville (20155)
$164,279 median income
- 20181
Nokesville (20181)
$164,167 median income
- 20120
Centreville (20120)
$152,563 median income
- 20110
Manassas (20110)
$118,486 median income
What this shows By household income, ZIP 20155 ranks #6 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 20169 | Haymarket, VA | 19,801 | 4.6 mi |
| 20143 | Catharpin, VA | 1,216 | 4.4 mi |
| 20137 | Broad Run, VA | 1,510 | 5.5 mi |
| 20109 | Manassas, VA | 37,265 | 5.1 mi |
| 20136 | Bristow, VA | 28,498 | 6.1 mi |
| 20181 | Nokesville, VA | 7,877 | 8.9 mi |
| 20120 | Centreville, VA | 40,695 | 8.2 mi |
| 20110 | Manassas, VA | 43,876 | 8.4 mi |
| 20198 | The Plains, VA | 2,492 | 8.9 mi |
| 20187 | Warrenton, VA | 15,252 | 9.0 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 20155, both outside VA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (29,411 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Prince William County
Related Areas
Frequently Asked Questions
What county is ZIP code 20155 in?
ZIP code 20155 (Gainesville) is located in Prince William County, Virginia. Prince William County contains multiple ZIP codes, see the full list at /counties/prince-william-va.
What is the population of ZIP code 20155?
ZIP code 20155 in Gainesville, VA has a population of 29,411 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 20155?
The median household income in ZIP 20155 is $164,279, which is 115% above the national average of $76,288.
What is the average home value in ZIP 20155?
The median home value in ZIP 20155 is $659,100, which is 137% above the national average of $278,155.
What is the demographic makeup of ZIP 20155?
The largest racial group in ZIP 20155 is White at 56.9%. Hispanic or Latino residents make up 10.9% of the population.
How many businesses are in ZIP code 20155?
ZIP code 20155 has 912 business establishments employing approximately 15,049 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 20155?
The top industries by establishment count in ZIP 20155 are: Professional, scientific, and technical services (169), Health care and social assistance (146), Retail trade (105). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 20155?
According to the FHFA House Price Index, home values in ZIP 20155 increased by 16.7% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 192%. 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 20155?
In ZIP code 20155, 73.3% of residents aged 25+ have a high school diploma or higher, and 57.2% 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 20155?
The mean commute time for workers in ZIP code 20155 is 33.3 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 20155?
In ZIP code 20155, approximately 85.9% of occupied housing units are owner-occupied and 14.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 20155?
The poverty rate in ZIP code 20155 is 2.7% 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 20155's numbers, next.
- See how ZIP 20155 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Gainesville, VA 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.