レベルを上げると住民数が増えます。城レベルを上げる際の条件となる場合が多いため、城レベル合わせてあげる必要があります。

レベル	建設時間*1	ゴールド	食料	木材	木炭	石材	鉄	その他	収容人員上限
1	00:00:07	-	-	-	-	70	-	-	120
2	00:00:15	230	-	-	-	90	-	-	180
3	00:01:20	350	680	-	-	120	-	-	360
4	00:02:00	520	1,000	-	-	340	-	-	540
5	00:02:58	780	1,500	-	-	510	-	-	1,080
6	00:05:56	1,200	7,400	-	-	2,500	-	-	1,680
7	00:11:42	1,900	10,000	-	-	3,400	-	-	2,280
8	00:23:16	3,200	14,000	-	-	4,800	-	-	3,000
9	00:32:30	5,700	20,000	-	-	6,800	-	-	4,000
10	00:42:14	9,700	28,000	-	-	9,500	-	-	5,000
11	00:54:57	16,000	40,000	-	-	13,000	-	-	6,000
12	01:04:34	23,000	67,000	-	-	23,000	-	-	8,000
13	01:24:00	33,000	110,000	-	-	36,000	-	-	10,000
14	01:49:07	46,000	170,000	-	-	57,000	-	-	12,000
15	02:34:50	62,000	300,000	-	-	100,000	-	-	14,000
16	03:36:49	87,000	540,000	-	-	180,000	-	-	16,000
17	05:03:29	140,000	760,000	-	-	250,000	-	-	19,000
18	07:01:01	240,000	1,300,000	-	-	450,000	-	-	22,000
19	09:49:29	420,000	2,300,000	-	-	780,000	-	-	25,000
20	11:50:04	700,000	3,100,000	-	-	1,000,000	-	-	29,000
21	17:38:22	910,000	5,000,000	-	-	1,700,000	-	-	34,000
22	22:49:45	1,100,000	5,700,000	-	-	1,900,000	-	-	39,000
23	1d 03:42:56	1,400,000	7,600,000	-	-	2,500,000	-	-	44,000
24	1d 14:48:14	1,600,000	9,900,000	-	-	3,300,000	-	-	49,000
25	2d 09:09:25	1,900,000	9,500,000	-	-	3,200,000	-	-	55,000