[Most of the following is from JP NDC's Quick Overview of Jamaica Plain]
One of 16 Boston neighborhoods – Google Map of JP
Sources: American Community Survey, 2005-2009; US Census 2000
Sources: American Community Survey, 2005-2009; US Census 2000
Sources: American Community Survey, 2005-2009; US Census 2000
Population:
o 56% White, 22% Latino, 13% African-American, 5% Asian, 4% other or multiracial
o 22% foreign born; 8% entered US within past 10 years
o 37% have household income under $35,000
o 17% households under poverty line
Business: Home to the largest Latino business district in New England; primarily Dominican, Cuban, Puerto Rican and Central American.
Environment: The most green space per capita of any Boston neighborhood; located along part of the “Emerald Necklace” system of waterways and parks designed by Frederick Law Olmsted. 
Boston is known for having the most community gardens per capita of any city in the United States, and is typically ranked in the top 5 US cities for farmer’s markets per capita.
Sources: American Community Survey 2005-2009; National Housing Conference and Center for Housing Policy
Sources: American Community Survey 2005-2009; US Census 2000; Bureau of Labor Statistics Inflation Calculator
Gentrification: 30 years ago, banks considered Jamaica Plain too risky to approve a mortgage. Today, JP is the third most expensive neighborhood in Boston – which has the eighth highest housing prices of US metropolitan areas. In May 2008, the median price for a single family home in Jamaica Plain was $498,000. To afford the average market-rate two-bedroom apartment, a household must earn over $60,000/year.
More information and descriptions of Jamaica Plain from: