Future state / Countries
Countries
| Country | Assessed | No tower, tier 1 to 3 | Towered, tier 1 to 3 | Tier 4 | Centres | People near gap |
|---|---|---|---|---|---|---|
| Argentina | 383 | 43 | 37 | 61 | 7 | 4.8 million |
| Australia | 1,354 | 142 | 32 | 512 | 22 | 11.4 million |
| Belgium | 8 | 1 | 2 | 0 | 1 | 1.6 million |
| Brazil | 3,457 | 343 | 42 | 311 | 25 | 107.9 million |
| Canada | 848 | 254 | 47 | 92 | 27 | 18.4 million |
| China | 276 | 211 | 11 | 3 | 24 | 350.1 million |
| Czech Republic | 68 | 5 | 7 | 0 | 1 | 3.5 million |
| Denmark | 30 | 8 | 3 | 0 | 1 | 443 thousand |
| Estonia | 8 | 1 | 0 | 0 | 1 | 0 |
| Finland | 61 | 7 | 11 | 0 | 2 | 1.2 million |
| France | 319 | 44 | 76 | 0 | 5 | 17.8 million |
| Germany | 264 | 47 | 32 | 0 | 3 | 38.3 million |
| Greenland | 16 | 12 | 2 | 2 | 6 | 15 thousand |
| Hong Kong | 1 | 0 | 0 | 0 | 0 | 0 |
| Hungary | 31 | 5 | 3 | 0 | 1 | 7.4 million |
| India | 233 | 82 | 89 | 13 | 11 | 113.3 million |
| Ireland | 14 | 4 | 5 | 0 | 1 | 114 thousand |
| Italy | 105 | 18 | 24 | 0 | 2 | 9.7 million |
| Japan | 102 | 49 | 33 | 0 | 7 | 78.3 million |
| Lithuania | 14 | 0 | 4 | 1 | 1 | 0 |
| Netherlands | 20 | 1 | 4 | 0 | 1 | 823 thousand |
| New Zealand | 72 | 18 | 15 | 2 | 3 | 3.6 million |
| Norway | 70 | 10 | 17 | 2 | 3 | 1.5 million |
| Poland | 59 | 8 | 13 | 0 | 1 | 7.2 million |
| Qatar | 2 | 0 | 0 | 0 | 0 | 0 |
| Romania | 26 | 1 | 14 | 0 | 2 | 379 thousand |
| Saudi Arabia | 63 | 22 | 3 | 7 | 5 | 6.9 million |
| Singapore | 2 | 0 | 1 | 0 | 1 | 0 |
| Spain | 96 | 15 | 32 | 0 | 5 | 5.8 million |
| Sweden | 88 | 13 | 20 | 1 | 3 | 596 thousand |
| Switzerland | 23 | 0 | 11 | 0 | 1 | 0 |
| United Kingdom | 157 | 31 | 48 | 0 | 4 | 32.9 million |
| United States | 3,195 | 1,682 | 471 | 11 | 92 | 200.1 million |
Countries are those already on this site plus India. "People near gap" counts people in cities of 15,000 or more within 50 km of an airport without a tower that meets a tier 1 to 3 rule.