How Many Big Families Live in America
The U.S. Census Bureau defines a big family as a household with three or more children. In 2023, about 1 in 6 American households with children fell into this category, with the highest concentrations in Utah, Idaho, and Texas. Pew Research Center data shows that the share of U.S. adults raising three or more kids has edged up slightly after a long decline, driven by religious communities and immigrant households. The average big family spends roughly 30% more on housing and food than the typical two-child household, according to the Bureau of Labor Statistics Consumer Expenditure Survey. Forbes breaks down the key cost drivers for large households here.
State-level data shows that states with the highest fertility rates, such as South Dakota and North Dakota, also have above-average shares of big families. The U.S. total fertility rate has hovered near the replacement level, but certain demographic groups still report higher desired family sizes. Large families are more likely to live in suburban or exurban areas where land and larger homes are more affordable per bedroom. The average income needed to comfortably support a big family is roughly 60% higher than for a couple with two children, based on USDA food and housing cost models.
Big Families and the U.S. Tax and Benefits System
The Child Tax Credit, expanded under the American Rescue Plan and later partially extended, provides up to $2,000 per qualifying child, with the refundable portion helping lower-income big families. The Earned Income Tax Credit and Supplemental Nutrition Assistance Program are also critical supports, especially for households with five or more dependents. The IRS standard deduction for head of household is higher than for single filers, which benefits single parents in big families. The SEC requires companies offering 529 college savings plans to disclose fees and projected costs, which matters as big families plan for multiple children's education. The SEC explains how 529 plans work and what to watch for in disclosures here.
The Child and Dependent Care Credit can offset a portion of daycare and after-school care costs, which are a major expense for working parents in big families. The IRS also allows certain education-related deductions and credits, including the American Opportunity Tax Credit and Lifetime Learning Credit. Some states offer additional tax credits or exemptions for large families, such as sales tax holidays on back-to-school supplies. The Social Security Administration tracks dependency benefits, which can provide ongoing income support if a parent becomes disabled or passes away.
Financial Tools and Companies Serving Big Families
Major banks and fintech companies now offer family-oriented checking accounts with no monthly fees and early direct deposit. Companies such as Greenlight and GoHenry provide debit cards for kids with parental controls, helping big families manage allowances and chores. Tesla and other EV makers offer federal and state incentives that can reduce transportation costs for larger households. Online marketplaces and bulk retailers, including Amazon and Costco, serve big families with subscription discounts on diapers, formula, and household goods.
Employer benefits are also shifting, with some large companies offering fertility benefits, adoption assistance, and backup childcare. The U.S. Department of Labor tracks employer-sponsored family leave policies, which vary widely by company size and sector. Financial advisors increasingly specialize in cash-flow planning for big families, focusing on college funding, insurance needs, and retirement timelines. Forbes Advisor ranks banks and accounts suited for families here. Budgeting apps that support multiple users and shared goals are