| Attribute |
Tonga × | 
Dominica × |
| Geography | | |
| Area (km²) | 747 | 751 |
| Continent | Australia | North America |
| Land area (km²) | 717 | 751 |
| Water area (km²) | 30 | - |
| Land boundaries (km) | 0 | 0 |
| Coastline (km) | 419 | 148 |
| Lowest point (m) | 0 | 0 |
| Highest point (m) | 1,046 | 1,447 |
| People | | |
| Population | 106,095 | 74,243 |
| Official languages | | |
| Religion | Protestant | Roman Catholic |
| Government | | |
| Long country name | Kingdom of Tonga | Commonwealth of Dominica |
| Short country name | Tonga | Dominica |
| Long local name | Pule'anga Fakatu'i 'o Tonga | - |
| Short local name | Tonga | - |
| Former name | | - |
| Government type | Constitutional monarchy | Parliamentary republic |
| Capital | Nuku'alofa | Roseau |
| Economy | | |
| GDP (PPP) (USD) | 591,000,000 | 783,000,000 |
| GDP (OER) (USD) | 455,000,000 | 557,000,000 |
| GDP (real growth rate) (%) | 2.5 | -4.7 |
| GDP - per capita (PPP) (USD) | 5,900 | 11,000 |
| Gross national saving (% of GDP) | - | 10.8 |
| Labor force | 33,800 | 25,000 |
| Unemployment rate (%) | 1.1 | 23 |
| Population below poverty line (%) | 22.5 | 29 |
| Budget revenues (USD) | 181,200,000 | 227,800,000 |
| Budget expenditures (USD) | 181,200,000 | 260,400,000 |
| Taxes and other revenues (% of GDP) | 39.8 | 40.9 |
| Budget surplus or deficit (% of GDP) | 0 | -5.9 |
| Public debt (% of GDP) | 48 | 82.7 |
| Inflation rate (%) | 7.4 | 0.6 |
| Central bank discount rate (%) | - | 6.5 |
| Commercial bank prime lending rate (%) | 8 | 8.08 |
| Stock of narrow money (USD) | 130,800,000 | 113,200,000 |
| Stock of broad money (USD) | 130,800,000 | 113,200,000 |
| Stock of domestic credit (USD) | 139,200,000 | 182,200,000 |
| Current account balance (USD) | -53,000,000 | -70,000,000 |
| Exports (USD) | 18,400,000 | 28,000,000 |
| Imports (USD) | 250,200,000 | 206,600,000 |
| Reserves of foreign exchange and gold (USD) | 198,500,000 | 212,300,000 |
| External debt (USD) | 189,900,000 | 280,400,000 |
| National currency | pa'anga | East Caribbean dollars |
| National currency (code) | TOP | XCD |
| National currency (symbol) | T$ | $ |
| 1↑National currency rate to USD | 2.228 | 2.7 |