Rockville, MD Profile: Facts, Map & Data


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Rockville, Maryland - Basic Facts

The City of Rockville is the 10th largest city in Maryland with a population of 66,072 as of July 1, 2017. Rockville ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Maryland. See peer rankings below.

The primary coordinate point for Rockville is located at latitude 39.0837 and longitude -77.1556 in Montgomery County. The formal boundaries for the City of Rockville (see map below) encompass a land area of 13.56 sq. miles and a water area of 0.06 sq. miles. Montgomery County is in the Eastern time zone (GMT -5). The elevation is 456 feet.

The City of Rockville (GNIS ID: 2390645) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Rockville is located within District 4, a minor civil division (MCD) of Montgomery County.

Beneath the boundary map are tables with Rockville population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Rockville: Hungerfords, Hungerfords Tavern, Hungerford's Tavern, Montgomery Court House, Montgomery Courthouse, Owen's Ordinary, Williamsburg, Williamsburgh.

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City of Rockville, MD Boundary Map

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Rockville, MD Data & Demographics (As of July 1, 2017)


Total Population 66,072
Daytime Population: Workers 53,200
Daytime Population: Residents 29,971
Total Daytime Population (TDP) 83,171
Ratio TDP/Total Population1 1.26
Population in Households 65,044
Population in Familes 51,363
Population in Group Qrtrs 1,028
Population Density2 4,873
Diversity Index3 75


Median Household Income $101,313
Average Household Income $132,959
Per Capita Income $52,034


Total Housing Units 26,645 (100%)
Owner Occupied HU 14,385 (54.0%)
Renter Occupied HU 11,063 (41.5%)
Vacant Housing Units 1,198 ( 4.5%)
Median Home Value $489,803
Average Home Value $532,740


Total Households 25,447
Average Household Size 2.56
Family Households 16,502
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 1.04% 0.88%
Households 0.98% 0.82%
Families 0.82% 0.72%
Median Household Income   1.62%
Per Capita Income   2.28%

Rockville, MD - Peer Comparisons by Rank and Percentile

The table below compares Rockville to the other 518 incorporated cities, towns and CDPs in Maryland by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 10 98th
Population Density # 61 88th
Diversity Index # 46 91st
Median Household Income # 109 79th
Per Capita Income # 51 90th

Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.

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