Rockford, Michigan
Demographics
Table:
Historical population

Census	Pop.	Note	%±

1870	582	—
1880	816	40.2%
1900	711	—
1910	843	18.6%
1920	1,148	36.2%
1930	1,613	40.5%
1940	1,773	9.9%
1950	1,937	9.2%
1960	2,074	7.1%
1970	2,428	17.1%
1980	3,324	36.9%
1990	3,750	12.8%
2000	4,626	23.4%
2010	5,719	23.6%
2017 (est.)	6,264	[3]	9.5%
U.S. Decennial Census[9]

Having looked at the tabular data covering 'Rockford, Michigan' in the 'Demographics' section, formulate a single-sentence overview of the highlighted cells and return it as JSON: {"answer": "YOUR ANSWER"}.