Adams County, Indiana Cities (2025)

32 cities

City	Rank	2025 Pop. ↓	2020 Pop.	Change	Density	Area (mi²)	Type
Decatur township	1	36,642	36,933	-0.05%	1,136	32.27	Township
Decatur	2	10,084	9,923	0.32%	1,653	6.10	City
Monroe township	3	8,929	8,766	0.5%	174	51.22	Township
Geneva township	4	7,713	7,503	0.84%	138	55.91	Township
Monroe township	5	6,792	5,630	4.62%	256	26.48	Township
Root township	6	6,154	6,040	0.29%	169	36.43	Township
Monroe township	7	5,891	5,634	0.87%	106	55.77	Township
Monroe township	8	5,384	5,270	0.43%	148	36.33	Township
Berne	9	4,257	4,182	0.35%	1,840	2.31	City
Monroe township	10	3,760	3,866	-0.69%	92	40.97	Township
Monroe township	11	3,573	3,497	0.62%	118	30.27	Township
Monroe township	12	3,384	3,450	-0.53%	116	29.14	Township
Monroe township	13	2,865	2,871	-0.17%	119	24.04	Township
Monroe township	14	2,042	1,966	0.79%	83	24.73	Township
Monroe township	15	1,651	1,647	0.36%	47	35.50	Township
Blue Creek township	16	1,611	1,570	0.62%	66	24.30	Township
Monroe township	17	1,568	1,495	0.97%	45	34.58	Township
Jefferson township	18	1,409	1,377	0.57%	58	24.10	Township
Monroe township	19	1,315	1,318	0.08%	69	19.20	Township
St. Marys township	20	1,294	1,261	0.62%	53	24.57	Township
Geneva	21	1,285	1,260	0.39%	1,164	1.10	Town
French township	22	1,281	1,251	0.39%	54	23.86	Township
Monroe township	23	1,130	1,145	-0.44%	47	23.85	Township
Preble township	24	1,047	1,030	0.29%	44	23.85	Township
Hartford township	25	1,013	984	0.7%	42	24	Township
Kirkland township	26	972	943	0.73%	40	24.21	Township
Union township	27	916	899	0.33%	37	24.75	Township
Monroe	28	901	883	0.45%	1,325	0.68	Town
Monroe township	29	629	608	0.8%	16	38.44	Township
Monroe township	30	624	639	-0.32%	15	42.48	Township
Monroe township	31	368	352	1.1%	10	36.60	Township
Vera Cruz	32	76	73	1.33%	752	0.10	Town

Adams County Cities Summary

Decatur township is the largest city in Adams County, with a population of 36,642.