| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Bacon | city | Idaho | United States | 44.63611 | -116.54694 | 2919 | 101 |
| Baker | city | Idaho | United States | 45.09472 | -113.73361 | 4547 | 172 |
| Bancroft | city | Idaho | United States | 42.72028 | -111.885 | 5446 | 299 |
| Banida | city | Idaho | United States | 42.23111 | -111.94167 | 4796 | 435 |
| Banks | city | Idaho | United States | 44.08056 | -116.12306 | 2798 | 137 |
| Banner | city | Idaho | United States | 44.02 | -115.53472 | 6200 | 61 |
| Bannock | city | Idaho | United States | 42.86139 | -112.72194 | 4452 | 255 |
| Barber | city | Idaho | United States | 43.56528 | -116.11222 | 2998 | 11238 |
| Barite | city | Idaho | United States | 43.55639 | -114.32556 | 5600 | 664 |
| Barlow | city | Idaho | United States | 43.67111 | -112.01222 | 4809 | 3622 |
| Barrymore | city | Idaho | United States | 42.68083 | -114.46222 | 3802 | 5346 |
| Barton | city | Idaho | United States | 44.38444 | -116.79889 | 2985 | 325 |
| Basalt | city | Idaho | United States | 43.31556 | -112.16361 | 4599 | 2146 |
| Basin | city | Idaho | United States | 42.24556 | -113.78361 | 5101 | 83 |
| Bassett | city | Idaho | United States | 43.65111 | -112.0875 | 4770 | 845 |
| Bates | city | Idaho | United States | 43.69167 | -111.2 | 6076 | 453 |
| Bayhorse | city | Idaho | United States | 44.39778 | -114.31083 | 6000 | 55 |
| Bayview | city | Idaho | United States | 47.98028 | -116.55917 | 2060 | 1037 |
| Beachs Corner | city | Idaho | United States | 43.5425 | -111.96333 | 4783 | 14622 |
| Bear | city | Idaho | United States | 45.02444 | -116.67111 | 4399 | 103 |
| Bear Creek Summer Home Area | city | Idaho | United States | 44.16667 | -115.19306 | 5810 | 54 |
| Bear Lake Hot Springs | city | Idaho | United States | 42.10861 | -111.26444 | 5921 | 316 |
| Bear Lake Sands | city | Idaho | United States | 42.05167 | -111.25278 | 6197 | 314 |
| Beatty | city | Idaho | United States | 43.60833 | -116.34 | 2677 | 43053 |
| Bedstead Corner | city | Idaho | United States | 44.27583 | -111.79222 | 6384 | 19 |
| Beeman | city | Idaho | United States | 46.40556 | -116.52417 | 3366 | 403 |
| Beer Bottle Crossing | city | Idaho | United States | 44.60861 | -116.23 | 6095 | 107 |
| Beetville | city | Idaho | United States | 42.48861 | -113.83056 | 4212 | 7209 |
| Bellevue | city | Idaho | United States | 43.46361 | -114.25972 | 5196 | 376 |
| Bellgrove | city | Idaho | United States | 47.53389 | -116.91389 | 2582 | 847 |
| Belmont | city | Idaho | United States | 47.92611 | -116.63861 | 2463 | 1241 |
| Belvidere | city | Idaho | United States | 44.47556 | -116.0325 | 4773 | 33 |
| Bench | city | Idaho | United States | 42.50361 | -111.67944 | 5442 | 298 |
| Benewah | city | Idaho | United States | 47.22778 | -116.78333 | 2811 | 369 |
| Bengoechea Place | city | Idaho | United States | 42.30472 | -115.84694 | 5016 | 19 |
| Bennington | city | Idaho | United States | 42.39111 | -111.32083 | 6105 | 311 |
| Berenice | city | Idaho | United States | 43.82778 | -112.97333 | 4908 | 56 |
| Berger | city | Idaho | United States | 42.46972 | -114.57389 | 4248 | 1821 |
| Bergstrom Place | city | Idaho | United States | 42.19444 | -114.93583 | 5429 | 28 |
| Bern | city | Idaho | United States | 42.33972 | -111.38528 | 5951 | 235 |
| Besslen | city | Idaho | United States | 42.90861 | -114.17278 | 4133 | 131 |
| Best Corner | city | Idaho | United States | 46.56194 | -116.14972 | 3100 | 65 |
| Bickel historical | city | Idaho | United States | 42.52806 | -114.20972 | 4146 | 999 |
| Big Cedar | city | Idaho | United States | 46.08111 | -115.81333 | 2667 | 14 |
| Big Creek | city | Idaho | United States | 45.12722 | -115.32333 | 5800 | 32 |
| Big Eddy | city | Idaho | United States | 44.21611 | -116.10639 | 4478 | 40 |
| Big George | city | Idaho | United States | 46.50278 | -116.49194 | 1204 | 609 |
| Big Springs | city | Idaho | United States | 44.49833 | -111.255 | 6489 | 19 |
| Bills | city | Idaho | United States | 42.53222 | -114.28556 | 4048 | 1932 |
| Bingo Creek Landing | city | Idaho | United States | 46.75722 | -115.73583 | 3202 | 61 |
| Black Bear | city | Idaho | United States | 47.51611 | -115.85139 | 4146 | 256 |
| Black Canyon | city | Idaho | United States | 43.92667 | -116.44139 | 2509 | 3027 |
| Black Pine | city | Idaho | United States | 42.0725 | -112.97944 | 4783 | 120 |
| Blackbird | city | Idaho | United States | 45.11333 | -114.21889 | 5580 | 56 |
| Blackcloud | city | Idaho | United States | 47.50472 | -115.90361 | 3428 | 426 |
| Blackfoot | city | Idaho | United States | 43.19056 | -112.34417 | 4501 | 6186 |
| Blackrock | city | Idaho | United States | 42.79694 | -112.32611 | 4599 | 1530 |
| Blacks Creek | city | Idaho | United States | 43.47778 | -116.13722 | 3379 | 449 |
| Blacks historical | city | Idaho | United States | 43.46389 | -116.00833 | 3599 | 477 |
| Blacktail | city | Idaho | United States | 48.12056 | -116.48528 | 2060 | 608 |
| Blackwell | city | Idaho | United States | 47.69778 | -116.80694 | 2204 | 30758 |
| Blaine | city | Idaho | United States | 46.65722 | -116.94778 | 2874 | 4069 |
| Blaine | city | Idaho | United States | 43.3425 | -114.59472 | 5009 | 33 |
| Blake | city | Idaho | United States | 46.47333 | -116.17667 | 1427 | 1174 |
| Blanchard | city | Idaho | United States | 48.01694 | -116.98278 | 2299 | 1087 |
| Bliss | city | Idaho | United States | 42.92694 | -114.94861 | 3208 | 417 |
| Bloomington | city | Idaho | United States | 42.19194 | -111.40056 | 5961 | 226 |
| Blue Dome | city | Idaho | United States | 44.16028 | -112.91056 | 6125 | 19 |
| Boehls | city | Idaho | United States | 46.87472 | -115.90444 | 1650 | 61 |
| Bogle | city | Idaho | United States | 47.35306 | -115.73667 | 3684 | 34 |
| Boise | city | Idaho | United States | 43.61361 | -116.2025 | 2739 | 83852 |
| Boise Hills Village | city | Idaho | United States | 43.6325 | -116.18889 | 2903 | 61216 |
| Boise Junction | city | Idaho | United States | 43.605 | -116.25583 | 2742 | 113195 |
| Boles | city | Idaho | United States | 45.91056 | -116.50306 | 4599 | 196 |
| Bonanza | city | Idaho | United States | 44.37056 | -114.72694 | 6601 | 14 |
| Bone | city | Idaho | United States | 43.3125 | -111.79444 | 6128 | 227 |
| Bonners Ferry | city | Idaho | United States | 48.69139 | -116.31528 | 2037 | 315 |
| Borax historical | city | Idaho | United States | 47.43444 | -115.67083 | 4209 | 67 |
| Border | city | Idaho | United States | 42.18306 | -111.04667 | 6184 | 227 |
| Boulder | city | Idaho | United States | 43.84056 | -114.50556 | 9504 | 102 |
| Boulder City historical | city | Idaho | United States | 48.60278 | -116.06833 | 3205 | 211 |
| Bovard historical | city | Idaho | United States | 46.66528 | -116.70139 | 1998 | 477 |
| Bovill | city | Idaho | United States | 46.85889 | -116.3925 | 2910 | 368 |
| Bowmont | city | Idaho | United States | 43.45611 | -116.54 | 2726 | 1971 |
| Box Canyon | city | Idaho | United States | 44.37889 | -111.40472 | 6190 | 19 |
| Boyer | city | Idaho | United States | 48.32306 | -116.44278 | 2099 | 1128 |
| Bradley | city | Idaho | United States | 47.54639 | -116.15972 | 2398 | 1566 |
| Bramwell | city | Idaho | United States | 43.83833 | -116.58194 | 2398 | 2024 |
| Bridge | city | Idaho | United States | 42.12944 | -113.34167 | 4744 | 70 |
| Broadford | city | Idaho | United States | 43.46972 | -114.27944 | 5203 | 376 |
| Bronx | city | Idaho | United States | 48.35194 | -116.54639 | 2106 | 1305 |
| Broten | city | Idaho | United States | 48.22111 | -116.41639 | 2365 | 1231 |
| Broten Post Office historical | city | Idaho | United States | 48.22111 | -116.41639 | 2365 | 1231 |
| Brownlee | city | Idaho | United States | 44.00889 | -116.24444 | 3841 | 169 |
| Bruce Eddy | city | Idaho | United States | 46.51361 | -116.28972 | 1338 | 1712 |
| Bruneau | city | Idaho | United States | 42.88056 | -115.79639 | 2598 | 30 |
| Brunning | city | Idaho | United States | 46.48417 | -116.14278 | 2831 | 544 |
| Buckingham | city | Idaho | United States | 43.98917 | -116.8925 | 2286 | 4737 |
| Budge | city | Idaho | United States | 42.60889 | -113.82361 | 4156 | 4231 |
| Bugtown historical | city | Idaho | United States | 43.65944 | -116.67389 | 2408 | 28917 |
| Buhl | city | Idaho | United States | 42.59917 | -114.75861 | 3799 | 5458 |
| Buist | city | Idaho | United States | 42.32722 | -112.60472 | 5157 | 139 |
| Bullion | city | Idaho | United States | 43.47278 | -114.37583 | 5590 | 98 |
| Bullion historical | city | Idaho | United States | 47.43222 | -115.67 | 4209 | 67 |
| Buncel Place | city | Idaho | United States | 42.55028 | -116.02361 | 4793 | 19 |
| Bundy | city | Idaho | United States | 46.36139 | -116.75639 | 1624 | 405 |
| Bunn | city | Idaho | United States | 47.51111 | -115.89806 | 3428 | 426 |
| Burgdorf | city | Idaho | United States | 45.27722 | -115.91194 | 6197 | 47 |
| Burke | city | Idaho | United States | 47.52028 | -115.81917 | 5124 | 132 |
| Burley | city | Idaho | United States | 42.53583 | -113.79194 | 4160 | 10667 |
| Burmah | city | Idaho | United States | 43.12944 | -114.25944 | 4563 | 130 |
| Burns | city | Idaho | United States | 48.62611 | -116.39389 | 2001 | 218 |
| Burton | city | Idaho | United States | 43.7975 | -111.85722 | 4839 | 9583 |
| Buswell historical | city | Idaho | United States | 46.83306 | -117.02722 | 2687 | 5619 |
| Butte City | city | Idaho | United States | 43.61 | -113.24333 | 5360 | 56 |
| Byrne | city | Idaho | United States | 43.69194 | -111.74583 | 5059 | 1922 |
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