How the scoring was tabulated

Population, growth and estimated attendance
Population and population growth come from the 2000 U.S. Census and 2001 Canadian census. For North Jersey, Bergen, Essex, Hudson, Morris and Passaic counties were used. For Washington D.C./Northern Virginia, counties included were Montgomery and Prince George's counties in Maryland, Arlington, Fairfax, Loudon and Prince William counties in Virginia.

For estimated attendance, the average attendance as a percentage of population for the last five years of each major-league team served as the base template. The markets were broken down into extra large (over 9 million), large (over 5 million to 9 million), medium (over 3 million to 5 million) and small (under 3 million) with the corresponding percentage applied to each city.

TV households
TV households came from Nielsen, except San Juan, Monterrey and Montreal, which Nielsen doesn't measure. For San Juan, data from Univision, which measures TV households on the island as a whole, was used. That number was multiplied (1,298,201) by the percentage that San Juan is of the population (65 percent). For Monterrey, information from an IBOPE (the Nielsen of Mexico) report was used. For Montreal, figures from the 2001 census and a CBC report was used.

Median income

Census data was used for median household income. For the North Jersey, D.C./Northern Virginia and Portland areas, the median household income per county times the number of households in each of the metropolitan counties was divided by the total number of households in the metro area. For Montreal, the median household income was multiplied by .724, a recent published exchange rate. The per capita GDP for Monterrey and the rest of Mexico was multiplied by 4.1 (average household size) then multiplied by 63.7 percent, which is the ratio of U.S. per capita income to per capita GDP.

Baseball history
The most arbitrary of the categories. A community received one point for every year it had a minor-league team and two points for every year with a major-league team. North Jersey was awarded points for both Jersey City and Newark. D.C. earned points for the Senators, Cannons, Alexandria Dukes and Bowie BaySox.

Fortune 500 companies
Fortune 500 headquarters was the criteria, except for Montreal. There are 42 companies on the Canadian Business 500 that, after multiplying their revenues by .724 would qualify for the Fortune 500. Eight of those are based in Montreal.

Other professional sports teams
MLB, NFL, CFL, NBA and NHL franchises in the market. All New York City teams counted for North Jersey except the Islanders and all Baltimore teams for D.C.

David Hallstrom lives in Chicago. He served as Assistant Deputy Director for Economic Development for Illinois for eight years and authored economic impact reports for Comiskey Park and the Kane County Cougars.