PlainZIP

Rockville, MD · standard

ZIP Code 20850

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

46,340
1,269/sq mi
$125,950
Median income
$714,400
Median home value
67.5%
Bachelor's or higher

The verdict

Rockville pairs a top-decile household income with top-decile home values, in a low-density, mixed-tenure area.

Top 8%
household income, US ZIPs
Top 6%
home value, US ZIPs
1,269
people per sq mi
50%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20850 against every reporting US ZIP.

ZIP code 20850 is a densely settled ZIP (a standard USPS delivery area) in Rockville, Montgomery County, Maryland, with 46,340 residents across 36.5 square miles, a density of 1,269 people per square mile, in the New York time zone.

ZIP 20850 skews affluent, with a median household income of $125,950 (10% above the Maryland average), while per-capita income is $68,066. Poverty here runs at 6.9%, with unemployment measured at 4.5%. On housing, the median home value is $714,400 (60% above the state average) with median rent at $2,309 per month, and 50.3% of occupied units are owner-occupied.

This is a highly-educated ZIP: 67.5% of adults hold a bachelor's degree or higher, the median age is 41.2, and the average commute is 30 minutes. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 20850, plus 6 more within Montgomery County, give a clearer read than the 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 20850

Top 5 sectors by establishment count in Rockville, MD

Which industries have the most business establishments in ZIP 20850.

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 20850, Rockville, 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

46,340

Population

36.5

Area (sq mi)

1,269

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 20850?

41.2

Median Age

45.9%

Male

54.1%

Female

36.1%

Foreign-Born

White 43.8%
African American 12.1%
Asian 28.2%
American Indian or Alaska Native 0.1%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 10.3%
Hispanic or Latino 12.6%

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?

$125,950

Median Household Income

+10% vs state

$68,066

Per Capita Income

6.9%

Poverty Rate

4.5%

Unemployment Rate

30.1 min

Mean Commute Time

How ZIP 20850 ranks nationally

Rockville, MD household income vs. every US ZIP code

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

$125,950 Top 8% higher than 92% 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%). This entry sits in this band. $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 76.3%
Bachelor's Degree or Higher 67.5%

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

What does housing look like?

22,418

Total Housing Units

21,159

Occupied Units

1,259

Vacant Units

2.33

Avg Household Size

Occupancy Type

Owner 50.3%
Renter 49.7%

$714,400

Median Home Value

+60% vs state

$2,309

Median Rent

1996

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

+4.9%

YoY Change (2024)

301

HPI Index (2000 = 100)

+201%

Total Change Since 2000

Home values in ZIP 20850 have increased 4.9% over the past year (2024). Since 2000, this ZIP has seen +201% cumulative appreciation.

Year Annual Change HPI Index
2020 +0.9% 225
2021 +6.3% 239
2022 +12.2% 268
2023 +6.9% 286
2024 +4.9% 301

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 2,728 business establishments in ZIP 20850, employing approximately 61,746 people with a combined annual payroll of $6,310,440,000.

2,728

Businesses

61,746

Employees

$6.3B

Annual Payroll

17

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 790 29.0%
Health care and social assistance 440 16.1%
Other services (except public administration) 243 8.9%
Finance and insurance 191 7.0%
Accommodation and food services 178 6.5%
Construction 145 5.3%
Administrative and support and waste management and remediation services 141 5.2%
Retail trade 126 4.6%
Real estate and rental and leasing 123 4.5%
Wholesale trade 85 3.1%
Manufacturing 58 2.1%
Information 54 2.0%
Educational services 40 1.5%
Management of companies and enterprises 38 1.4%
Transportation and warehousing 36 1.3%
Arts, entertainment, and recreation 34 1.3%
Utilities 4 0.1%

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 20850 vs 20880 →

ZIP 20850 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 20850 ranks #3 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 20850 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 20850 ranks #7 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
20880 Washington Grove, MD 450 3.4 mi
20877 Gaithersburg, MD 34,321 3.4 mi
20851 Rockville, MD 14,191 3.3 mi
20879 Gaithersburg, MD 24,360 5.4 mi
20899 Gaithersburg, MD 142 4.1 mi
20878 Gaithersburg, MD 62,446 4.1 mi
20855 Derwood, MD 14,295 4.1 mi
20852 Rockville, MD 40,365 4.1 mi
20853 Rockville, MD 29,673 4.7 mi
20854 Potomac, MD 49,611 4.5 mi

More ZIP Codes in Montgomery County

20906 standard
Silver Spring, MD
Pop: 64,696
20878 standard
Gaithersburg, MD
Pop: 62,446
20874 standard
Germantown, MD
Pop: 57,367
20904 standard
Silver Spring, MD
Pop: 54,612
20854 standard
Potomac, MD
Pop: 49,611
20902 standard
Silver Spring, MD
Pop: 48,841

Related Areas

Montgomery County Rockville, MD Maryland

Frequently Asked Questions

What county is ZIP code 20850 in? ▼
ZIP code 20850 (Rockville) is located in Montgomery County, Maryland. Montgomery County contains multiple ZIP codes, see the full list at /counties/montgomery-md.
What is the population of ZIP code 20850? ▼
ZIP code 20850 in Rockville, MD has a population of 46,340 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 20850? ▼
The median household income in ZIP 20850 is $125,950, which is 65% above the national average of $76,288.
What is the average home value in ZIP 20850? ▼
The median home value in ZIP 20850 is $714,400, which is 157% above the national average of $278,155.
What is the demographic makeup of ZIP 20850? ▼
The largest racial group in ZIP 20850 is White at 43.8%. Hispanic or Latino residents make up 12.6% of the population.
How many businesses are in ZIP code 20850? ▼
ZIP code 20850 has 2,728 business establishments employing approximately 61,746 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 20850? ▼
The top industries by establishment count in ZIP 20850 are: Professional, scientific, and technical services (790), Health care and social assistance (440), Other services (except public administration) (243). There are 17 industry sectors represented in total.
How have home values changed in ZIP code 20850? ▼
According to the FHFA House Price Index, home values in ZIP 20850 increased by 4.9% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 201%. 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 20850? ▼
In ZIP code 20850, 76.3% of residents aged 25+ have a high school diploma or higher, and 67.5% 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 20850? ▼
The mean commute time for workers in ZIP code 20850 is 30.1 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 20850? ▼
In ZIP code 20850, approximately 50.3% of occupied housing units are owner-occupied and 49.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 20850? ▼
The poverty rate in ZIP code 20850 is 6.9% 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.