Average age of mothers at childbirth by birth order in United States of America
United States of America: Average age of mothers at childbirth by birth order was 27.85 years in 2023. ▲ Rising
Latest (2023)
27.85 years
Change on year
up 0.2%
World rank
27th
of 33 countries
All-time high
27.85 years
in 2023
All-time low
22.24 years
in 1962
Years of data
91
1933–2023
Average age of mothers at childbirth by birth order in United States of America, 1933–2023
Source: Human Fertility Database (2025) – processed by Our World in Data. Measured in years.
Analysis
United States of America recorded 27.85 years for average age of mothers at childbirth by birth order in 2023. That is the highest value across all 91 years on record.
That represents a change of up 0.2% on the previous year and up 4.7% over ten years.
Over the whole period, average age of mothers at childbirth by birth order in United States of America peaked at 27.85 years in 2023 and was at its lowest, 22.24 years, in 1962.
United States of America ranks 27th of 33 countries on this measure, in the bottom quarter.
The long-run direction has been consistently rising across the 91 years of available data.
Average age of mothers at childbirth by birth order in United States of America, year by year
| Year | years | Change |
|---|---|---|
| 1933 | 23.32 years | — |
| 1934 | 23.3 years | -0.1% |
| 1935 | 23.36 years | +0.3% |
| 1936 | 23.49 years | +0.6% |
| 1937 | 23.52 years | +0.1% |
| 1938 | 23.61 years | +0.4% |
| 1939 | 23.72 years | +0.5% |
| 1940 | 23.88 years | +0.7% |
| 1941 | 23.91 years | +0.1% |
| 1942 | 24 years | +0.4% |
| 1943 | 23.97 years | -0.1% |
| 1944 | 23.96 years | -0.0% |
| 1945 | 24.03 years | +0.3% |
| 1946 | 24.2 years | +0.7% |
| 1947 | 23.82 years | -1.6% |
| 1948 | 23.49 years | -1.4% |
| 1949 | 23.39 years | -0.4% |
| 1950 | 23.27 years | -0.5% |
| 1951 | 23.11 years | -0.7% |
| 1952 | 23.09 years | -0.1% |
| 1953 | 22.93 years | -0.7% |
| 1954 | 22.81 years | -0.5% |
| 1955 | 22.72 years | -0.4% |
| 1956 | 22.55 years | -0.7% |
| 1957 | 22.47 years | -0.4% |
| 1958 | 22.43 years | -0.2% |
| 1959 | 22.36 years | -0.3% |
| 1960 | 22.32 years | -0.2% |
| 1961 | 22.28 years | -0.2% |
| 1962 | 22.24 years | -0.2% |
| 1963 | 22.24 years | +0.0% |
| 1964 | 22.38 years | +0.6% |
| 1965 | 22.38 years | +0.0% |
| 1966 | 22.39 years | +0.0% |
| 1967 | 22.36 years | -0.1% |
| 1968 | 22.51 years | +0.7% |
| 1969 | 22.46 years | -0.2% |
| 1970 | 22.43 years | -0.1% |
| 1971 | 22.45 years | +0.1% |
| 1972 | 22.42 years | -0.1% |
| 1973 | 22.48 years | +0.3% |
| 1974 | 22.66 years | +0.8% |
| 1975 | 22.77 years | +0.5% |
| 1976 | 22.96 years | +0.8% |
| 1977 | 23.09 years | +0.6% |
| 1978 | 23.25 years | +0.7% |
| 1979 | 23.35 years | +0.4% |
| 1980 | 23.44 years | +0.4% |
| 1981 | 23.6 years | +0.7% |
| 1982 | 23.71 years | +0.5% |
| 1983 | 23.83 years | +0.5% |
| 1984 | 23.96 years | +0.5% |
| 1985 | 24.03 years | +0.3% |
| 1986 | 24.12 years | +0.4% |
| 1987 | 24.25 years | +0.5% |
| 1988 | 24.31 years | +0.2% |
| 1989 | 24.31 years | +0.0% |
| 1990 | 24.33 years | +0.1% |
| 1991 | 24.28 years | -0.2% |
| 1992 | 24.35 years | +0.3% |
| 1993 | 24.36 years | +0.0% |
| 1994 | 24.4 years | +0.2% |
| 1995 | 24.5 years | +0.4% |
| 1996 | 24.66 years | +0.7% |
| 1997 | 24.81 years | +0.6% |
| 1998 | 24.91 years | +0.4% |
| 1999 | 25.04 years | +0.5% |
| 2000 | 25.2 years | +0.6% |
| 2001 | 25.33 years | +0.5% |
| 2002 | 25.49 years | +0.6% |
| 2003 | 25.7 years | +0.8% |
| 2004 | 25.73 years | +0.1% |
| 2005 | 25.71 years | -0.1% |
| 2006 | 25.65 years | -0.2% |
| 2007 | 25.66 years | +0.0% |
| 2008 | 25.73 years | +0.3% |
| 2009 | 25.86 years | +0.5% |
| 2010 | 26.06 years | +0.8% |
| 2011 | 26.27 years | +0.8% |
| 2012 | 26.41 years | +0.5% |
| 2013 | 26.61 years | +0.8% |
| 2014 | 26.84 years | +0.9% |
| 2015 | 26.97 years | +0.5% |
| 2016 | 27.15 years | +0.7% |
| 2017 | 27.25 years | +0.4% |
| 2018 | 27.37 years | +0.4% |
| 2019 | 27.41 years | +0.1% |
| 2020 | 27.51 years | +0.4% |
| 2021 | 27.71 years | +0.7% |
| 2022 | 27.79 years | +0.3% |
| 2023 | 27.85 years | +0.2% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1930s | 23.47 years | 23.3 years | 23.72 years | 7 |
| 1940s | 23.87 years | 23.39 years | 24.2 years | 10 |
| 1950s | 22.77 years | 22.36 years | 23.27 years | 10 |
| 1960s | 22.36 years | 22.24 years | 22.51 years | 10 |
| 1970s | 22.79 years | 22.42 years | 23.35 years | 10 |
| 1980s | 23.96 years | 23.44 years | 24.31 years | 10 |
| 1990s | 24.56 years | 24.28 years | 25.04 years | 10 |
| 2000s | 25.61 years | 25.2 years | 25.86 years | 10 |
| 2010s | 26.83 years | 26.06 years | 27.41 years | 10 |
| 2020s | 27.71 years | 27.51 years | 27.85 years | 4 |
Countries ranked near United States of America
More population data for United States of America
- Population regions with projections, annual growth rate 0.1369 % change on previous year (2100)
- Urban and rural population 2050, annual growth rate -2.8 % change on previous year (2050)
- Population long run with projections, annual growth rate 0.1369 % change on previous year (2100)
- Un population 2024 vs 2022, annual growth rate 0.0241 % change on previous year (2100)
- Africa's Development Dynamics (AfDD) Table 05 - Demographic estimates 375,392 Persons (2050)
- Africa's Development Dynamics (AfDD) Table 03 - Annual population 0.4762 Percent per annum (2030)
- Projected population under age 5, annual growth rate 0.1565 % change on previous year (2100)
- World population growth 0.1% (2100)
- Population density 46.05 people per km² (2100)
- Number of children under 5, by world region 19.91 million people (2100)
Frequently asked questions
- What is average age of mothers at childbirth by birth order in United States of America?
- Average age of mothers at childbirth by birth order in United States of America was 27.85 years in 2023, according to Human Fertility Database (2025) – processed by Our World in Data.
- What is the highest average age of mothers at childbirth by birth order recorded in United States of America?
- The highest recorded value was 27.85 years in 2023.
- What is the lowest average age of mothers at childbirth by birth order recorded in United States of America?
- The lowest recorded value was 22.24 years in 1962.
- How does United States of America rank for average age of mothers at childbirth by birth order?
- United States of America ranks 27th out of 33 countries with data for 2023.
- Is average age of mothers at childbirth by birth order rising or falling in United States of America?
- Over the last ten years it is up 4.7%. The long-run trend across the full record is rising.
- Where does this United States of America data come from?
- The figures come from Human Fertility Database (2025) – processed by Our World in Data, published as part of Average age of mothers at childbirth by birth order. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 91 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Average age of mothers when they have their first child in a specific year. It is standardized for the age structure of the female population of reproductive age.