The U.S. Census Bureau's American Community Survey (ACS) released its five-year data release that covers a wide variety of topics, including household income, from 2015 to 2019.

Here are the 20 Seacoast municipalities with the highest median incomes from 2015 to 2019, per the ACS. For reference, the U.S. median household income for this time period was $62,843, the survey said.

Most municipalities are relatively close in median income, but the No. 1 town on this list seems to be a significant outlier.

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20. Nottingham, New Hampshire - $48,404

19. Hampstead, New Hampshire - $49,069

18. Atkinson, New Hampshire - $49,219

17. Greenland, New Hampshire - $50,042

16. Newton, New Hampshire - $50,108

15. Portsmouth, New Hampshire - $50,483

14. Kensington, New Hampshire - $50,776

13. Fremont, New Hampshire - $51,076

12. Newington, New Hampshire - $51,726

11. Lee, New Hampshire - $52,941

10. Stratham, New Hampshire - $53,286

9. West Newbury, Massachusetts - $53,619

8. South Hampton, New Hampshire - $53,917

7. Newbury, Massachusetts - $54,009

6. Hampton Falls, New Hampshire - $54,105

5. Brentwood, New Hampshire - $56,593

4. Rye, New Hampshire - $57,063

3. Newfields, New Hampshire - $59,145

2. Newburyport, Massachusetts - $61,047

1. New Castle, New Hampshire - $77,083

NH's Most Expensive House