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21791 Zip Code Map | Maps, Demographics and Population for Union Bridge, MD

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21791 is a 5-digit zip code located in Union Bridge, Maryland. Union Bridge is the primary city for 21791 and is located in Carroll. In the most recent US census the population of 21791 was 5292.

There are a total of 2,088 housing units in 21791, Maryland. A total of 5.27% (110) are currently vacant.

Heading Statistic
Timezone GMT-5
City Name Union Bridge
Housing Units 2,088
Median Home Value $349,900
Universities 0
Law Enforcement 0 Locations
Hospitals 0
Heading Statistic
Current Population 5,292*
Avg Income $88,984
Occupied Houses 1,879
Vacant Houses 110
* Population taken from the last census in 2020.

Zip Code Products Showing 21791

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Maryland 3-Digit Zip Code Map Showing 21791

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County Map Showing 21791, Maryland

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You can download our data and files for 21791 here for FREE. If you need any data that isn't available here please get in touch through our contact form.

Population Figures for 21791

Total Population by Age

21791 has a total population of 5,292. In the bar chart and table below, this population is split into 18 different age range segments.

Most inhabitants of 21791 are in the 60 to 64 years age bracket. As of the last census, there are 406 people in this segment.

The 80 to 84 years segment is the smallest age range in 21791. There are just 115 people in this category.

Age Range Population
Under 5 286
5 to 9 150
10 to 14 275
15 to 19 393
20 to 24 281
25 to 29 294
30 to 34 308
35 to 39 272
40 to 44 332
Age Range Population
45 to 49 287
50 to 54 267
55 to 59 392
60 to 64 406
65 to 69 285
70 to 74 181
75 to 79 129
80 to 84 115
Over 85 202


Race and Gender Population of 21791

Men make up the highest portion of people in 21791. There are 2,632 men and 2,223 women in this 5-digit zip code.

Most people in this zip code are White, with a total of 4,617 people in this category.

The chart and table below shows the population of people and which race they belong to in 21791


Gender Population
Male 2,632
Female 2,223
Race Population
White 4,617
Black 53
American Indian 5
Asian 81
Native Hawaiian 10
Some other race 26

Real Estate Figures

Median Rent Median House Value Median Rooms in House Most Common Heating Type
$38 $349,900 6.9 rooms Electricity

Housing Types in 21791 Zip Code

Below are two charts showing the amount of occupied vs vacant homes and the amount of renter vs owner occupied houses in the 21791 zip code.

The 21791 zip code area has a homeowner vacancy rate of 6.71% and a rental vacancy rate of 23.97%. This means there are a total of 110 vacant housing units throughout the zip code area. Conversely there are 1,879 housing units that are currently occupied.

Occupied Units Vacant Units Owner Vacancy Rate Rental Vacancy Rate
1,879 110 6.71% 23.97%
Owner-Occupied Renter-Occupied
1,530 349

Property Value in 21791

Most homes in 21791 are valued $300,000 to $499,999, with 602,060 houses in this category.

There are just 30 houses valued at $300,000 to $499,999. As you can see in the chart and table below, this is the smallest segment in this zip code.

The affordability ratio for the 21791 zip code in Maryland is 3.2. This is calculated by dividing the median housing value by the median income and is used to show how affordable a zip code is.

An affordability ratio of 3.2 is generally considered Medium (Moderately Affordable).

House Value Units
Less than $50,000 2,080
$50,000 to $99,999 30
$100,000 to $149,999 7,020
$150,000 to $199,999 100,040
$200,000 to $299,999 304,040
House Value Units
$300,000 to $499,999 602,060
$500,000 to $999,999 209,080
$1,000,000 or more 5,050
Median House Value $349,900


Heating Types for Homes in 21791

There are 7 different heating types used by people in the 21791 zip code area. As you can see from the table and chart below; Utility gas, Bottled, tank, or LP gas, Electricity, Fuel oil, kerosene, etc., Wood, Other fuel, No fuel used are the most commonly used heating types in this area.

Electricity is most commonly used to heat homes in 21791. As you can see below, there are 738 houses that use this method.

Heating Type Units
Utility gas 22
Bottled, tank, or LP gas 131
Electricity 738
Fuel oil, kerosene, etc. 688
Coal or coke 0
Heating Type Units
Wood 234
Solar energy 0
Other fuel 44
No fuel used 22

Household Income Generated 12-months of 2022

The chart and tables below show the household income segments for households in the 21791. 1.4 of households are on the low end, earning less than $10,000 in 2022.

On the other end, 10.1 of households earned more than $200,000 in the same year. You will also see that the mean income of this zip code is around $109,807.

Most households in 21791 earn in the $100,000 to $149,999 range. 21% of households are in this segment.

Income Range Percent
Less than $10,000 1.4
$10,000 to $14,999 3.4
$15,000 to $24,999 4.5
$25,000 to $34,999 5.2
$35,000 to $49,999 7.9
$50,000 to $74,999 19.8
Income Range Percent
$75,000 to $99,999 11.3
$100,000 to $149,999 21.9
$150,000 to $199,999 14.4
$200,000 or more 10.1
Mean income $109,807

Bedrooms, Rooms and Units in Structures in 21791

Below are three pie charts and tables showing the amount of bedrooms, total rooms and structures in houses for this zip code.

Most houses in 21791 have 5 or more bedrooms, with a total of 28 houses.

In regards to rooms in general, people in this zip code have an average of 6.9 rooms in their house. Most houses actually have 9 rooms or more in their house. 512 homes fit into this category.

512 homes in 21791 are in the 1-unit, detached category, which is the most common in terms of structures for this area.

The largest homes tracked, which are 20 units or more, make up 0 of the houses in this zip code. On the other end, 1,862 houses make up the smallest homes, which are 1 unit, mobile homes or boats.

Bedrooms Units
No bedroom 28
1 bedroom 28
2 bedrooms 28
3 bedrooms 28
4 bedrooms 28
5 or more bedrooms 28
Rooms Units
1 room 3
2 rooms 8
3 rooms 63
4 rooms 145
5 rooms 263
6 rooms 341
7 rooms 455
8 rooms 199
9 rooms or more 512
Median rooms 6.9
Units in Structure Units
1-unit, detached 1801
1-unit, attached 54
2 units 54
3 or 4 units 55
5 to 9 units 30
10 to 19 units 42
20 or more units 0
Mobile home 0
Boat, RV, van, etc. 7

Healthcare and Hospitals

Hospitals Database

There are currently no hospital and healthcare locations in the zip code of 21791.

Universities

Universities Database

There are currently no hospital and healthcare locations in the zip code of 21791.



Crime and Law Enforcement

Law Enforcement Data

There are currently no crime and law enforcement locations in the zip code of 21791.