Mumbai is a megacity in the heart of Maharashtra and it spreads over an area of 603.4 km², with a metro area of 6, 328 km². By the year 2025, the population in the city is projected to reach 18.2 million, while that of the metro area will be above 26.9 million. The City of Dreams and Seven Islands is also famous for an 89.73% literacy rate, a sex ratio of 853 females per 1000 males and a very high HDI of 0.841. The language that is used for official purposes is Marathi.
Quick Overview of Mumbai City Census 2021
- District: Mumbai (formerly Bombay)
- Location: Maharashtra State, Konkan Division
- Type: Megacity
- Area: 603.4 km² (City) | 6,328 km² (Metro)
- Population (City): 12,442,373 (2011 Census) | 18,203,000 (2025 Estimate)
- Population (Metro): 18,394,912 (2011 Census) | 26,912,000 (2025 Estimate)
- Sex Ratio (City): 853 females per 1000 males
- Average Literacy Rate: 89.73% (City)
- Official Language: Marathi
- Nickname(s): City of Dreams, City of Seven Islands, Maximum City
- Coordinates: 19°04′34″N 72°52′39″E
- HDI: 0.841 (Very High)
Population & Projected Growth (Mumbai City & Metro)
| Year | City Population | Metro Population |
| 2011 | 12,442,373 | 18,394,912 |
| 2021 | 16,175,000 | 23,913,000 |
| 2022 | 16,660,000 | 24,630,000 |
| 2023 | 17,159,000 | 25,368,000 |
| 2024 | 17,673,000 | 26,129,000 |
| 2025 | 18,203,000 | 26,912,000 |
| 2026 | 18,749,000 | 27,719,000 |
| 2027 | 19,311,000 | 28,550,000 |
| 2028 | 19,890,000 | 29,406,000 |
| 2029 | 20,486,000 | 30,288,000 |
| 2030 | 21,100,000 | 31,196,000 |
| 2031 | 21,733,000 | 32,131,000 |
Mumbai Demographics (2011 Census)
| Description | Total | Male | Female |
| City Population | 12,442,373 | 6,715,931 | 5,726,442 |
| Literates | 10,084,507 | 5,633,709 | 4,450,798 |
| Children (0-6) | 1,203,770 | 629,262 | 574,508 |
| Average Literacy (%) | 89.73 | 92.56 | 86.39 |
| Sex Ratio | 853 |
| Child Sex Ratio | 913 |
Religion-Wise Population Data
| Religion | Population (2011) | Percentage | Projected (2025) |
| Hindu | 8,210,894 | 65.99% | 9,126,409 |
| Muslim | 2,568,961 | 20.65% | 2,855,400 |
| Christian | 407,031 | 3.27% | 452,415 |
| Sikh | 60,759 | 0.49% | 67,534 |
| Buddhist | 603,825 | 4.85% | 671,151 |
| Jain | 509,639 | 4.10% | 566,464 |
| Others | 49,439 | 0.40% | - |
| Not Stated | 31,825 | 0.26% | 35,373 |
Literacy Rate & Sex Ratio (Mumbai Metropolitan Region)
| Description | 2011 Pop. | Male | Female | 2025 (Est.) |
| Population | 18,394,912 | 9,872,271 | 8,522,641 | 20,445,945 |
| Literates | 14,854,433 | 8,242,697 | 6,611,736 | 16,510,702 |
| Children (0-6) | 1,849,894 | 968,584 | 881,310 | 2,056,157 |
| Average Literacy (%) | 89.78% | 92.58% | 86.53% | - |
| Sex Ratio | 863 |
| Child Sex Ratio | 910 |
Slum Population
- Total Slums (City): 1,135,514
- Population in Slums: 5,206,473
- Share of Slum Population: 41.84% of total city population
Socio-Economic & Workforce Facts
- GDP (PPP Estimate): US$400 billion
- GDP (Metro, Estimate): US$277 billion
- Contribution to India’s GDP: 6.16%
- Industrial Output Share: 25%
- Maritime Trade Share: 70%
- Key Industries: Finance, Film (Bollywood & Marathi), Textile, Petrochemical, Automotive, Science & Nuclear research
Historic & Cultural Facts
- First Settled: 1507
- Mumbadevi Temple: Patron Hindu goddess, city’s name source
- Historic Islands: Isle of Bombay, Parel, Mazagaon, Mahim, Colaba, Worli, Old Woman’s Island
- Key Monuments: Gateway of India, Flora Fountain/Hutatma Chowk, Chhatrapati Shivaji Terminus, Marine Drive, Kanheri & Mahakali Caves, Haji Ali Dargah
- UNESCO World Heritage Sites: Elephanta Caves, Chhatrapati Shivaji Terminus, Victorian & Art Deco Ensemble
- Migrants & Diversity: Centre for migration, business opportunities, industrial growth
ST & SC Population Data (Mumbai District)
- Scheduled Castes (SC) & Scheduled Tribes (ST): Data not specifically tabulated here. See Maharashtra census district breakdown for detailed proportions (Mumbai city has lower proportions of SC/ST compared to rest of state).
Urban / Rural / Household Statistics
- Mumbai Urban Agglomeration: Includes Ambernath, Badalapur, Greater Mumbai, Kalyan-Dombivali, Mira-Bhayander, Navi Mumbai, Thane, Ulhasnagar
- Urban Households: Constitutes almost all of Mumbai, minimal rural house coverage within district limits
City & Sub-District List, Population & Stats
| City | Population (2011) | Population (2025 Est.) |
| Mumbai | 12,442,373 | 13,829,698 |
| Pune | 3,124,458 | 3,472,835 |
| Nagpur | 2,405,665 | 2,673,897 |
| Thane | 1,841,488 | 2,046,814 |
| Hinganghat | 101,805 | 113,156 |
| Udgir | 103,550 | 115,096 |
| Wardha | 106,444 | 118,313 |
| Nandurbar | 111,037 | 123,418 |
Highest & Lowest Sex Ratio Cities in Maharashtra
| City | Sex Ratio |
| Gondiya | 997 |
| Yavatmal | 991 |
| Sangli Miraj Kupwad | 982 |
| Wardha | 982 |
| Bhiwandi | 709 |
| Navi Mumbai Panvel Raigad | 820 |
| Pimpri & Chinchwad | 833 |
| Navi Mumbai | 837 |