• aga?a is the capital of guam. population: 1,000 (1990). aga?a is the capital of guam. population: 1,000 (1990). aga?a is the capital of guam. population: 1,000 (1990). aga?a is the capital of guam. population: 1,000 (1990). aga?a is the capital of guam. population: 1,000 (1990). aga?a is the capital of guam. population: 1,000 (1990). aga?a is the capital of guam. population: 1,000 (1990). aga?a is the capital of guam. population: 1,000 (1990).