Main / ZIP Codes / 20855

ZIP Code 20855 demographics

Cities: 4

Total housing units: 6,326

Population: 17,123

ZIP Code 20855 location, demographics, population, home values, social and economic characteristics.

ZIP Code 20855 Location

The list below contains cities and counties that use ZIP Code 20855.

20855 state: Maryland
20855 county: Montgomery County
20855 cities: Derwood CDP , Olney CDP , Redland CDP , Rockville city

ZIP Code 20855 population: 17,123

Population

Year	Population
2021	17,123
2020	15,955
2019	15,287
2018	14,302
2017	14,512
2016	14,871
2015	14,686
2014	14,178
2013	14,176
2012	14,377
2011	13,973

Census data for ZIP Code 20855

Demographic and housing estimates in ZIP Code 20855

Total population
Total population	17,123
Male	8,325
Female	8,798

Population by age
Total population	17,123
Under 5 years	1,129
5 to 9 years	904
10 to 14 years	1,028
15 to 19 years	1,144
20 to 24 years	889
25 to 34 years	2,008
35 to 44 years	2,134
45 to 54 years	2,016
55 to 59 years	1,465
60 to 64 years	1,409
65 to 74 years	1,741
75 to 84 years	989
85 years and over	267
Median age (years)	41.7
Under 18 years	3,749
16 years and over	13,809
18 years and over	13,374
21 years and over	12,825
62 years and over	3,822
65 years and over	2,997

Population by race
Total population	17,123
One race	15,640
White	10,001
Black or African American	1,977
American Indian and Alaska Native	203
Asian	2,842
Native Hawaiian and Other Pacific Islander	88
Some other race	529
Two or more races	1,483

Citizen, voting age population
Citizen, VOTING AGE 18 and over population	12,167
Male Citizen, VOTING AGE 18 and over population	6,226
Female Citizen, VOTING AGE 18 and over population	5,941

Social characteristics in ZIP Code 20855

Households by type
Total households	6,140
Family households (families)	3,827
Married-couple family	217
Male householder, no wife present, family	836
Female householder, no husband present, family	344
Nonfamily households	1,260
Average household size	2,025
Average family size	2.78

Economic characteristics in ZIP Code 20855

Income and benefits (in inflation-adjusted dollars)
Total households	6,140
Less than $10,000	65
$10,000 to $14,999	109
$15,000 to $24,999	238
$25,000 to $34,999	226
$35,000 to $49,999	326
$50,000 to $74,999	545
$75,000 to $99,999	589
$100,000 to $149,999	1,449
$150,000 to $199,999	900
$200,000 or more	1,693
Median household income (dollars)	139,899

Housing characteristics in ZIP Code 20855

Housing occupancy
Total housing units	6,326
Occupied housing units	6,140
Vacant housing units	186

Units in structure
Total housing units	6,326
1-unit, detached	4,195
1-unit, attached	1,023
2 units	6
3 or 4 units	89
5 to 9 units	76
10 to 19 units	288
20 or more units	640
Mobile home	9
Boat, RV, van, etc.	0

Year structure built
Total housing units	6,326
Built 2014 or later	26
Built 2010 to 2013	1,113
Built 2000 to 2009	81
Built 1990 to 1999	395
Built 1980 to 1989	2,166
Built 1970 to 1979	986
Built 1960 to 1969	1,339
Built 1950 to 1959	95
Built 1940 to 1949	56
Built 1939 or earlier	69

Rooms
Total housing units	6,326
1 room	33
2 rooms	74
3 rooms	388
4 rooms	596
5 rooms	459
6 rooms	416
7 rooms	822
8 rooms	1,161
9 rooms or more	2,377
Median rooms	7.8

Bedrooms
Total housing units	6,326
No bedroom	40
1 bedroom	326
2 bedrooms	835
3 bedrooms	1,539
4 bedrooms	2,473
5 or more bedrooms	1,113

Housing tenure
Occupied housing units	6,140
Owner-occupied	4,877
Renter-occupied	1,263
Average household size of owner-occupied unit	2.83
Average household size of renter-occupied unit	2.58

Year householder moved into unit
Occupied housing units	6,140
Moved in 2017 or later	676
Moved in 2015 to 2016	1,381
Moved in 2010 to 2014	665
Moved in 2000 to 2009	1,332
Moved in 1990 to 1999	902
Moved in 1989 and earlier	1,184

Value
Owner-occupied units	4,877
Less than $50,000	5
$50,000 to $99,999	13
$100,000 to $149,999	39
$150,000 to $199,999	22
$200,000 to $299,999	230
$300,000 to $499,999	1,669
$500,000 to $999,999	2,756
$1,000,000 or more	143
Median (dollars)	552,700

Mortgage status
Owner-occupied units	4,877
Housing units with a mortgage	3,338
Housing units without a mortgage	1,539

Gross rent
Occupied units paying rent	1,218
Less than $500	54
$500 to $999	45
$1,000 to $1,499	139
$1,500 to $1,999	244
$2,000 to $2,499	435
$2,500 to $2,999	104
$3,000 or more	197
Median (dollars)	2,146
No rent paid	45

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