The Beaumont–Port Arthur metropolitan statistical area is a three-county region in Southeast Texas.

The "golden" refers to the wealth that came from the Spindletop oil strike near Beaumont in 1901, and "triangle" refers to the area between the cities of Beaumont, Port Arthur, and Orange.

[2] Newton County was added to the metropolitan area in the February, 2013 delineation (OMB Bulletin 13–01);[3] the addition of Newton County increased the 2010 population by 14,445.

According to the 2020 U.S. census,[6] there were 397,565 people, 150,085 households, 101,240 families, and 169,646 housing units within the MSA.

The racial makeup of the MSA was 56.31% White (non-Hispanic White 52.3%), 23.86% African American, 2.09% Native American, 2.88% Asian, 0.03% Pacific Islander, 8.09% from other races, and 2.83% from two or more races.