The two businesses are The Delray Sands Resort and John P O'Grady Realty.

As of the 2020 United States census, there were 4,295 people, 2.094 households, and 1.285 families residing in the town.

[8] As of the 2010 United States census, there were 3,539 people, 1,962 households, and 1,161 families residing in the town.

None of the families and 2.1% of the population were living below the poverty line, including no under eighteens and 2.0% of those over 64.

[12] As of 2000, Highland Beach had the tenth highest percentage of Austrian residents in the US, with 4.0% of the populace (tied with Mondovi, Wisconsin).

[13] Although the language percentages of Highland Beach didn't necessarily reflect the residents' ancestry, it had the thirty-sixth highest percentage of Russian residents in the US, at 10.90% of the town's population (tied with Atlantic Beach, New York),[14] and the seventh highest percentage of Turkish residents in the US, at 1.20% of its population (tied with five other US areas, including Bay Harbor Islands).