Rank	City	2020 Population (Est.)	Growth Rate (Annual)
1	Wilmington	70,166	-0.1%
2	Dover	38,166	0.6%
3	Newark	33,515	0.7%
4	Middletown	22,900	2.2%
5	Smyrna	11,813	1.8%
6	Milford	11,732	2.3%
7	Seaford	8,013	1.6%
8	Georgetown	7,563	1.8%
9	Elsmere	5,872	-0.5%
10	New Castle	5,392	0.2%
11	Millsboro	4,533	1.8%
12	Laurel	4,356	1.8%
13	Harrington	3,638	0.2%
14	Camden	3,551	0.3%
15	Clayton	3,508	2.1%
16	Lewes	3,322	2.1%
17	Milton	3,012	1.8%
18	Townsend	2,659	2.9%
19	Selbyville	2,540	1.8%
20	Bridgeville	2,366	1.6%
21	Ocean View	2,190	1.7%
22	Delaware City	1,837	0.9%
23	Delmar	1,822	1.5%
24	Cheswold	1,695	2.3%
25	Wyoming	1,549	1.9%
26	Rehoboth Beach	1,546	1.7%
27	Blades	1,454	1.8%
28	Felton	1,414	1.0%
29	Bethany Beach	1,245	1.8%
30	Bellefonte	1,164	-0.3%
31	Greenwood	1,139	1.8%
32	Newport	1,039	-0.2%
33	Frankford	987	1.7%
34	Dagsboro	927	1.6%
35	Frederica	849	1.0%
36	Millville	626	1.6%
37	South Bethany	530	1.9%
38	Fenwick Island	445	1.8%
39	Arden	440	0.0%
40	Ellendale	434	1.5%
41	Houston	405	0.9%
42	Dewey Beach	400	1.8%
43	Bowers	374	1.2%
44	Odessa	360	-0.1%
45	Magnolia	289	2.8%
46	Kenton	271	0.4%
47	Ardentown	270	0.3%
48	Slaughter Beach	241	1.7%
49	Little Creek	235	0.5%
50	Ardencroft	216	-0.7%
51	Leipsic	205	1.3%
52	Bethel	201	1.8%
53	Woodside	193	0.7%
54	Viola	165	0.6%
55	Henlopen Acres	144	1.9%
56	Farmington	122	1.2%
57	Hartly	76	0.3%