| Attribute |
Tonga × | 
Montserrat × |
| Geography | | |
| Area (km²) | 747 | 102 |
| Continent | Australia | North America |
| Land area (km²) | 717 | 102 |
| Water area (km²) | 30 | 0 |
| Land boundaries (km) | 0 | 0 |
| Coastline (km) | 419 | 40 |
| Lowest point (m) | 0 | 0 |
| Highest point (m) | 1,046 | 915 |
| People | | |
| Population | 106,095 | 5,373 |
| Official languages | | Array of values |
| Religion | Protestant | Protestant |
| Government | | |
| Long country name | Kingdom of Tonga | - |
| Short country name | Tonga | Montserrat |
| Long local name | Pule'anga Fakatu'i 'o Tonga | - |
| Short local name | Tonga | - |
| Former name | | - |
| Government type | Constitutional monarchy | Parliamentary democracy |
| Capital | Nuku'alofa | Plymouth |
| Economy | | |
| GDP (PPP) (USD) | 591,000,000 | 167,400,000 |
| GDP (OER) (USD) | 455,000,000 | 167,400,000 |
| GDP (real growth rate) (%) | 2.5 | 7.4 |
| GDP - per capita (PPP) (USD) | 5,900 | 34,000 |
| Labor force | 33,800 | 4,521 |
| Unemployment rate (%) | 1.1 | 5.6 |
| Population below poverty line (%) | 22.5 | - |
| Budget revenues (USD) | 181,200,000 | 66,670,000 |
| Budget expenditures (USD) | 181,200,000 | 47,040,000 |
| Taxes and other revenues (% of GDP) | 39.8 | - |
| Budget surplus or deficit (% of GDP) | 0 | - |
| Public debt (% of GDP) | 48 | - |
| Inflation rate (%) | 7.4 | 1.2 |
| Central bank discount rate (%) | - | 10.99 |
| Commercial bank prime lending rate (%) | 8 | 6.95 |
| Stock of narrow money (USD) | 130,800,000 | 28,330,000 |
| Stock of broad money (USD) | 130,800,000 | 28,330,000 |
| Stock of domestic credit (USD) | 139,200,000 | 5,185,000 |
| Current account balance (USD) | -53,000,000 | -15,400,000 |
| Exports (USD) | 18,400,000 | 4,400,000 |
| Imports (USD) | 250,200,000 | 39,440,000 |
| Reserves of foreign exchange and gold (USD) | 198,500,000 | 47,580,000 |
| External debt (USD) | 189,900,000 | 8,900,000 |
| National currency | pa'anga | East Caribbean dollars |
| National currency (code) | TOP | XCD |
| National currency (symbol) | T$ | $ |
| National currency rate to USD | 2.228 | 2.7 |