This list of neighborhoods in Detroit, the United States, provides a general overview of neighborhoods and historic districts within the city. Neighborhood names and boundaries vary in their formality; some are well defined and long established, while others are more informal. Further names and boundaries have evolved over time due to development or changes in demographics. Woodward Avenue, a major a north–south thoroughfare, serves as a demarcation for neighborhood areas on the east side and west side of the city.