Chennai

District in Tamil Nadu

PopulationCensus 2011, the latest complete count; Census 2027 results are expected from 2028
46.5 Lakh
State: 6.9 Crore
Area
427 km²
0.3% of state
Literacy RateCensus 2011: literates as a share of people aged 7 and above
90.2%
State: 79.7%
Sex RatioCensus 2011: females per 1,000 males
989
State: 997
DensityCensus 2011 population per km²
10,879 /km²
State: 534 /km²
Population RankBy Census 2011 population
1st of 38
In Tamil Nadu

Credit Growth (5-Year) in Chennai: 80.2%, 8th lowest of 32 districts in Tamil Nadu

MSME Density in Chennai: 97.2 per 1,000 people, 2nd highest of 38 districts in Tamil Nadu

Women Literacy in Chennai: 94.8%, 2nd highest of 32 districts in Tamil Nadu

Health Insurance in Chennai: 64.8%, 16th highest of 38 districts in Tamil Nadu

60%85%110%140%200%+No data
RBI Bank Credit (BSR-1) · 2026
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5204080150+No data
Udyam Registration (MSME) · 2026
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40%55%65%80%90%+No data
National Family Health Survey (NFHS-5) · 2019–21
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5%20%40%60%85%+No data
National Family Health Survey (NFHS-6) · 2023–24
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Chennai is a district in Tamil Nadu with a population of 46.5 Lakh (Census 2011) spread across 427 sq km. Its literacy rate of 90.2% is above the state average of 79.7% and above the national average of 72.9%. The district has a sex ratio of 989 females per 1,000 males, below the state average of 997. Some values for this district are estimates: area-proportional, or copied from the district it was carved from.


Demographics

IndicatorDistrictState AvgNational
Population Density10,879 /km²▲534 /km²366 /km²
Sex Ratio989▼997943
Literacy Rate90.2%▲79.7%72.9%
SC Population16.8%▼20.2%16.6%
ST Population0.2%▼1.1%8.7%
Worker Participation39.1%▼45.8%39.8%

What changed in Chennai, 2019–21 to 2023–24

NFHS-5 → NFHS-6, changes of 5 points or more.

Health & Development

NFHS-6 (2023–24, provisional) · “was”: the 2019–21 value, where it moved 5 points or more

State Avg and National are population-weighted averages, not official NFHS figures. “Was” is NFHS-5 as reprinted on the NFHS-6 sheet, which can differ from the NFHS-5 layer. Small districts can swing on sampling noise.

Women & Gender

IndicatorDistrictState AvgNational
Child Marriage8th lowest of 377.0%was 1.9%▼10.8%19.2%
Female Literacy Gap2nd lowest of 387.1 pts▼13.6 pts16.5 pts
Female Work Gap2nd highest of 3839.2 pts▲27.0 pts27.9 pts

Economy & Infrastructure

IndicatorDistrictState AvgNational
MSME Density2nd highest of 3897.2 per 1k pop▲61.7 per 1k pop39.8 per 1k pop
Total MSMEsHighest of 384.5 Lakh▲1.1 Lakh61.7k
Women Internet UseHighest of 3879.3%was 71.4%▲60.0%64.4%

Governance

IndicatorDistrictState AvgNational
Pending Cases7th highest of 373136 per lakh▲2436 per lakh4025 per lakh

Safety & Crime

IndicatorDistrictState AvgNational
Child Abuse (POCSO)22nd highest of 376.7 per lakh▼7.0 per lakh5.3 per lakh
Cyber Crime (IT Act cases)14th highest of 332.2 per lakh—2.2 per lakh2.7 per lakh
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Frequently Asked Questions

What is the population of Chennai district?

Chennai has a population of 46.5 Lakh according to the Census 2011, with a density of 10,879 people per sq km across 427 sq km.

What is the population of Chennai in 2026?

There is no official count or district estimate after 2011. The latest figure is the Census 2011 count of 46.5 Lakh. Census 2027 enumeration takes place in February 2027, with results expected from 2028.

What is the literacy rate of Chennai?

Chennai has a literacy rate of 90.2% (Census 2011), which is above the Tamil Nadu average of 79.7% and above the national average of 72.9%.

How does Chennai compare to Tamil Nadu?

Chennai is the 1st most populous of 38 districts in Tamil Nadu. Its sex ratio of 989 females per 1,000 males is below the state average of 997 (Census 2011).

How many children in Chennai are stunted or underweight?

In Chennai, 17.5% of children under 5 are stunted, 16.5% wasted and 20.8% underweight (NFHS-6, 2023–24, provisional). Stunting compares with a Tamil Nadu average of 20.7% and an India average of 28.0%.

How many households in Chennai have health insurance?

64.8% of households in Chennai have at least one member covered by a health insurance or financing scheme (NFHS-6, 2023–24, provisional), up from 58.2% in 2019–21. The Tamil Nadu average is 61.9% and India's 58.1%.

What changed in Chennai between NFHS-5 and NFHS-6?

Between NFHS-5 (2019–21) and NFHS-6 (2023–24), Chennai improved most in pre-school attendance (38% to 63%), 4+ antenatal visits (90% to 98%), women internet use (71% to 79%), and got worse in male diabetes (22% to 29%), child marriage (2% to 7%). Changes under 5 percentage points are not counted.

What data sources are used for Chennai?

Data comes from Census 2011, NFHS-5 (2019–21), NFHS-6 (2023–24), NJDG (2024), Udyam/MSME (2026), NCRB SLL (2022), CVI (2021), Ag Census 2015–16, RBI BSR (2026), and other official sources.

Data Sources

Each indicator keeps its own source and vintage. How they are crosswalked onto one district geography is on the methodology page, with the per-source limits on the caveats page.