Henderson, MD 21640 ZIP Code Profile

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Henderson, MD

ZIP Code 21640: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Henderson, MD 21640

  • ZIP Code Type: STANDARD
  • County: Caroline County
  • Centroid: Latitude 39.069, Longitude -75.815
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

ZIP Code 21640 has segments in 2 Counties / Independent Cities (Caroline, Queen Annes).

  • Businesses Addresses: 13
  • PO Box Addresses: 22
  • Residential Addresses: 572
    • Multi-Family Addresses: 0
    • Single Family Addresses: 572

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 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.


21640 ZIP Code Map

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Henderson, MD 21640 Data & Demographics (As of July 1, 2017)


Total Population 1,494
Daytime Population: Workers 68
Daytime Population: Residents 786
Total Daytime Population (TDP) 854
Ratio TDP/Total Population1 0.57
Population in Households 1,494
Population in Familes 1,201
Population in Group Qrtrs 0
Population Density2 49
Diversity Index3 63


Median Household Income $48,651
Average Household Income $62,629
Per Capita Income $22,931


Total Housing Units 614 (100%)
Owner Occupied HU 407 (66.3%)
Renter Occupied HU 140 (22.8%)
Vacant Housing Units 67 (10.9%)
Median Home Value $228,226
Average Home Value $239,619


Total Households 547
Average Household Size 2.73
Family Households 395
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 -0.23% 0.11%
Households -0.4% 0.04%
Families -0.45% -0.05%
Median Household Income   1.31%
Per Capita Income   2.9%

Henderson, MD 21640 - Peer Comparisons by Rank and Percentile

The table below compares 21640 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 # 329 28th
Population Density # 412 10th
Diversity Index # 78 83rd
Median Household Income # 405 11th
Per Capita Income # 412 10th

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

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