DemographicsSilver report
Published April 2026Insight Research17 min read2026 Edition10 sources, 9 primary-gradeStrong source depth

Thai Aging 65+ Trajectory and Fertility Collapse: Economic Impact

Thai 65+ population reached 13M in 2024 (~19% of total) and forecast to hit 17-18M (~26%) by 2035. Total fertility rate (TFR) collapsed to ~1.0 in 2024 β€” among the lowest in Asia, below replacement (2.1) and below Japan/Korea historical lows. Working-age population (15-64) peaked 2014; now declining ~0.5%/year. Old-Age Dependency Ratio rising sharply. Healthcare, pension, immigration, automation are structural watch areas.

Key takeaways

  1. 1

    Thai 65+ population (, 2024); projected 17- () by 2035.

  2. 2

    TFR collapsed to ~1.0 in 2024; among lowest in Asia; below Japan/Korea historical lows.

  3. 3

    Working-age population peaked 2014; now declining ~/year.

  4. 4

    Old-Age Dependency Ratio ~28 (2024), projected 50+ by 2040.

  5. 5

    Aged-society threshold ( 65+) crossed 2022; super-aged () by 2032-2034.

  6. 6

    Structural impact: healthcare, pension, CLMV migrant reliance, automation acceleration.

Questions this report answers

What's the structural picture? Per NSO and NESDC: Thai 65+ population (~ of total, 2024). Aged-society threshold () crossed 2022; super-aged () projected 2032-2034 β€” fastest demographic transition globally outside Japan and South Korea.[, ]

What's the TFR collapse story? Per NSO and Bangkok Post coverage: total fertility rate collapsed to ~1.0 in 2024 β€” among the lowest in Asia, below Japan (1.36) and South Korea (0.78). Below replacement (2.1) and below historical Japan/Korea lows. No clear path to rebound; structural Asian-fertility-pattern.[, ]

What's the economic impact? Per BOT research: working-age population peaked 2014; now declining ~/year. Old-age dependency ratio rising. Productivity-growth trajectory under pressure. Structural responses: CLMV migrant labour reliance, automation adoption, healthcare/pension/age-care demand surge, retirement-housing growth.[]

Public-record references
Data as of: 2025-2030 horizon

Executive summary

Thai 65+ population (, 2024); projected 17- () by 2035. TFR collapsed to ~1.0 in 2024 β€” among lowest in Asia.[]

Working-age peak 2014; declining /year. Old-Age Dependency Ratio ~28 (2024) β†’ 50+ by 2040. Aged-society 2022; super-aged 2032-2034.[]

Structural impact: healthcare/pension surge, CLMV reliance, automation acceleration, silver-economy. Foreign LTR/retirement-visa silver-economy attraction. Watch TFR rebound and healthcare-spending trajectory.[]

Public-record references
Data as of: 2025-2030 horizon

Thai aging and demographic structure

65+ population (2024)

Value

13M (~19%)

Notes

Aged-society 14%+ threshold crossed 2022.

TFR (2024)

Value

~1.0

Notes

Lowest in Asia; below Japan/Korea.

Working-age decline

Value

~0.5%/year

Notes

Peaked 2014.

Old-Age Dependency Ratio

Value

28 (2024) β†’ 50+ (2040)

Notes

Doubling 2024-2040.

Super-aged threshold

Value

2032-2034 projected

Notes

>20% 65+.

Structural responses

Value

CLMV labour, automation, healthcare/pension surge

Notes

Silver economy.

Public-record references
Data as of: 2024-2026

Analyst framing

Why this report matters

Thai 65+ at 19% (2024); TFR collapsed to ~1.0 β€” lowest in Asia. Working-age peaked 2014. Old-Age Dependency Ratio doubling 2024-2040. Aged-society 2022; super-aged 2032-2034. Structural impact: CLMV, automation, healthcare/pension surge.

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