There are 5 U.S. Territories: American Samoa (AS), Guam (GU), the Commonwealth of Northern Mariana Islands (MP), Puerto Rico (PR), and the U.S. Virgin Islands (VI). However, due to data availability, IMPLAN only produces models for PR and VI. 

The U.S. Territory data have the same sectoring scheme as all other U.S.-based data and have all the same capabilities with the exception of multi-regional input-output (MRIO) modeling capability due to the lack of data on the trade of goods and services between the Territories and other geographies, including between the Territories themselves.



The raw data available for Territories is not nearly as comprehensive or timely compared to the U.S. State and County data. Nor are Territories included in the U.S. NIPA accounts, so there are fewer overall control totals than there are for the U.S. states and counties.

The Bureau of Labor Statistics (BLS) publishes Census of Employment and Wages (CEW) data for PR and VI annually. The CEW data represent the main source of data on wage and salary employment and income. However, for the farm sectors, we rely on the Census of Agriculture. While Military employment comes from the Department of Defense.

The U.S. Census Bureau provides data on population and Household counts by income group for each of the Territories. 

The Bureau of Economic Analysis (BEA) provides data on Gross Domestic Product (GDP) and its components (Personal Consumption Expenditures, Gross Private Domestic Investment, Change in Private Inventories, Exports, Imports, Government Consumption Expenditures and Gross Investment) for both PR and VI. The BEA also provides data on Gross Domestic Income (GDI) and its components (Employee Compensation, Taxes on Production and Imports net of subsidies, and Gross Operating Surplus) for VI. 

Ratios from the latest Territory Economic Census and from the U.S. data are used in various stages to fill in data gaps and project lagged data.

The raw data for U.S. Territories do not include enough detail to break out the State and Local Government data into the sub-components in IMPLAN of State, County, Sub County (Special Districts), and Sub County (General). Therefore, for both Puerto Rico and the U.S Virgin Islands, the Tax Impact report will not display separate results for State Government vs. Local Government, nor the sub-components of Local Government. All State and Local Government tax impacts are included in the State Tax Impacts section.


We first calculate U.S. foreign export rates by Commodity as a percentage of total U.S. supply of that Commodity (including industrial and institutional supply). We then apply those foreign export rates to the Territory’s total supply of each Commodity for a first estimate of foreign exports by Commodity.

We then compare the sum of the foreign exports of goods and services, respectively, to the target control totals for the Total Foreign Exports of goods and services from the BEA and adjust the export of each Commodity upward or downward as needed and as possible given the constraints that 1) Exports cannot exceed Supply and 2) Exports must be at least as large as the difference between Gross Supply and Gross Demand, else there would be supply that is not used.

  • Our Total Supply and Demand estimates set limits on Gross Imports and Exports. Meanwhile, the Value-Added data (EC, PI, OPI, and TOPI) must equal the BEA GDP control value. Therefore, since the study area data have a GDP control and Supply and Demand estimates (derived from estimates of Industry Output, the Industry Byproducts Matrix, the Industry Absorption Matrix, Final Demand, and Institutional sales), the Study Area Data entirely determine what Net Exports must be. Since all the other GDP controls (for Final Demands and Institutional sales) match what's in the BEA GDP controls, the trade process yields total Net Trade (across all Commodities) that is equal to the Net Trade value from BEA.
  • In other words, while our sum of goods Exports and services Exports may not perfectly match their BEA control values, our value for Net Trade will match the BEA control total for Net Trade.


Once we know gross supply by Commodity (derived from estimates of Industry Output, the Industry Byproducts Matrix, and Institutional sales) and Foreign Exports by Commodity (described above), we can calculate Net Supply of each Commodity as Gross Supply less Foreign Exports. We can then calculate Foreign Imports as Gross Demand (derived from estimates of Industry Output, the Industry Absorption Matrix, and Final Demand) less Net Supply.



Data Products and Release Notes


Written April 18, 2024