Symbols of the City of Boston
Learn about the symbols of Boston, and how we display them.
City flag and seal
The City Flag
The City flag is a Continental blue and buff. The flag is five-feet long and three-and-a-half-feet wide, or within that ratio. The center of the flag features the City seal surrounded by two white rings.
The municipal standard flag features an image of the Trimountain on the back and a fringe of Continental buff. The City flag has no image on the back and no fringe. The image on the City flag is either painted on or woven into the fabric. The flag fabric is silk.
The City Seal
The City Seal was adopted in 1823. The first image of the seal was published in 1827. It became the official seal in 1914. It's a circular image that features:
- a view of the City of Boston
- the motto, “SICUT PATRIBUS, SIT DEUS NOBIS” (which means, “God be with us as he was with our fathers”), and
- the inscription, “BOSTONIA CONDITA AD. 1630 CIVITATIS REGIMINE DONATA AD. 1822.”
You can download Boston's seal in our brand guidelines.
Displaying the City flag
United States flag
- Franklin's Birthday, January 17
- Lincoln's Birthday, February 12
- Washington's Birthday, February 22
- Evacuation Day, March 17
- Patriots' Day, April 19
- Grant's Birthday, April 27
- Memorial Day, May 30
- Flag Day, June 14
- Bunker Hill Day, June 17
- Independence Day, July 4
- Labor Day, first Monday in September
- Boston's Settlement Anniversary, September 17
- Columbus Day, October 12
- Veterans' Day, November 11, and
- any other day the Mayor or City Council orders it.