Jeremy S. Wu, Ph. D. (Jeremy.S.Wu@gmail.com)

Mark Lin (marklindata@gmail.com)

An interactive map to visualize the distribution of Asian American populations by Congressional District is now available at http://bit.ly/2014AAbyCD.  The user may move and zoom in and out of the map and view the following results by pointing and clicking at any location in the United States:

• State and Congressional District
• Name of incumbent U.S. House Representative and political party affiliation (D=Democrat and R=Republican)
• Total Asian American population in the district and
   Asian Indian, Chinese, Filipino, Japanese, Korean, Vietnamese, and Other Asians
   Males and females
   Percentages of males and females age 18 and over

The interactive map is color-coded by 5 approximately equal-size groups. The darker the color, the higher the number of Asian Americans.

These results are available for 437 locations based on 2014 data – 435 Congressional Districts, the District of Columbia, and Puerto Rico. The U.S. representatives serve a term of 2 years. The next general election will be held on November 8, 2016.According to the 2014 U.S. Census Bureau estimates, there were 15.7 million Asian Americans in the U.S. (not including Puerto Rico), among them are 23.5% Chinese, 19.8% Asian Indian, 16.9% Filipino, 10.7% Vietnamese, 9.3% Korean and 5.0% Japanese. Males represent 47.4% and females 52.6%. Age 18 and over make up 78.8%.

The U.S. Congresspersons currently representing the most Asian Americans are:

Among the 435 U.S. Representatives, three are Chinese Americans：

Judy Chu Democrat CA-27			Asian Americans population (Ranked 4） 264,289 Chinese American population (Ranked 1) 170,383
Ted Lieu Democrat CA-33			Asian American population (Ranked 32) 98,655 Chinese American population (Ranked 24) 27,346
Grace Meng Democrat NY-6			Asian American population (Ranked 3) 276,924 Chinese American population (Ranked 2) 155,371

Data Sources

The interactive map based on 2014 estimates.  The 2013 version is also released.  It is based on the integration of three data sources:

• Five-year estimates from the American Community Survey by the U.S. Census Bureau http://1.usa.gov/1R2diIW
• The 5M version of the Cartographic Boundary Files for the Congressional Districts under the 114^th Congress by the U.S. Census Bureau http://1.usa.gov/1Ob1qxI
• The 114^th Congressional Directory of Representatives by the U.S. House of Representatives http://1.usa.gov/1LVWjzt

Notes

• The average population size of a Congressional District is about 710,000 according to the 2010 census
• Congressional District boundaries may be changed by state legislatures and sometimes challenged in court
• The American Community Survey (ACS) produces two sets of estimates – 1-year and 5-year. Updates are typically released in December
• The Asian American subpopulation estimates are based on one race only; it does not include two or more races
• Due to demographic, election, and geographic changes, the map will also change over time; it will be updated as needed
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