Whittier is a neighborhood of Denver, Colorado, located approximately two miles northeast of downtown Denver. The boundaries of the neighborhood are 23rd Avenue to the south, Martin Luther King Boulevard to the north, Downing St. to the west and York St. to the east. The neighborhood is mostly residential and old by standards of the cities of the American …Whittier is a neighborhood of Denver, Colorado, located approximately two miles northeast of downtown Denver. The boundaries of the neighborhood are 23rd Avenue to the south, Martin Luther King Boulevard to the north, Downing St. to the west and York St. to the east. The neighborhood is mostly residential and old by standards of the cities of the American West. Most of the housing stock was built prior to the 1940s.