Big Pool, MD 21711 ZIP Code Profile

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Big Pool, MD

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ZIP Code 21711: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Big Pool, MD 21711

  • ZIP Code Type: STANDARD
  • County: Washington County
  • Centroid: Latitude 39.671, Longitude -78.005
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 9
  • PO Box Addresses: 0
  • Residential Addresses: 398
    • Multi-Family Addresses: 0
    • Single Family Addresses: 398

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


21711 ZIP Code Map

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Big Pool, MD 21711 Data & Demographics (As of July 1, 2017)


Total Population 1,116
Daytime Population: Workers 80
Daytime Population: Residents 522
Total Daytime Population (TDP) 602
Ratio TDP/Total Population1 0.54
Population in Households 1,116
Population in Familes 979
Population in Group Qrtrs 0
Population Density2 40
Diversity Index3 8


Median Household Income $59,980
Average Household Income $76,049
Per Capita Income $28,893


Total Housing Units 484 (100%)
Owner Occupied HU 345 (71.3%)
Renter Occupied HU 79 (16.3%)
Vacant Housing Units 60 (12.4%)
Median Home Value $283,163
Average Home Value $320,435


Total Households 424
Average Household Size 2.63
Family Households 326
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 -0.06% 0.25%
Households -0.16% 0.19%
Families -0.13% 0.12%
Median Household Income   1.56%
Per Capita Income   2.72%

Big Pool, MD 21711 - Peer Comparisons by Rank and Percentile

The table below compares 21711 to the other 456 ZIP Codes 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 # 345 25th
Population Density # 420 8th
Diversity Index # 438 4th
Median Household Income # 322 30th
Per Capita Income # 328 28th

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

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