New Jersey Sees Slowing Population Growth Driven By Declining Immigration
Recent census data highlights a significant deceleration in New Jersey’s population growth, primarily attributed to a notable decline in immigration. The U.S. Census Bureau’s latest state and county estimates reveal that net international immigration has reached historic lows nationwide. From July 1, 2023, to June 30, 2024, immigration peaked at approximately 2.7 million before plunging to roughly 1.3 million by June 2025—a staggering decrease of over 50% within a single year.
Census Bureau officials attribute this downturn to a combination of reduced immigration rates and increased emigration from the U.S. The projections for 2023-2025 reflect two distinct phases in U.S. immigration policy, noticeably influencing demographic trends across states.
James Hughes, a demography expert at Rutgers University, notes that the rhetoric and policies of the previous administration have created a less welcoming environment for potential immigrants. He emphasizes that these factors contribute significantly to declining immigration to the United States, particularly in regions historically open to new arrivals.
Peter Hepburn, a sociology professor at Rutgers University in Newark, corroborates this view, indicating that the restrictive policies of the previous administration have led to a chilling effect on immigration across the country. He points out that this decline should be viewed in contrast to the marked increase in immigration observed during the Biden administration.
According to census data, New Jersey’s population experienced a growth of 0.4% from mid-2024 to mid-2025, bringing the total to about 9.55 million residents. Although immigration contributed to this modest rise, its impact is considerably smaller than in previous years. The state recorded a substantial decline in net international migration, dropping from 121,000 in 2023-2024 to just 53,000 the following year, marking New Jersey as one of the states with the largest net loss of immigrants.
Surrounding states are also grappling with similar trends. New York saw its immigration numbers decrease by two-thirds, with net immigration dropping to roughly 96,000, while Pennsylvania experienced a 54% drop to around 27,000. Conversely, Florida reported the most significant influx, attracting nearly 179,000 immigrants, although this figure is a 37% decrease from the preceding year.
Population fluctuations can profoundly influence various sectors, including job security and community services funding. The total population determines congressional representation, and New Jersey’s low population growth means it will likely retain its congressional seats in the upcoming reapportionment.
As birth rates continue to decline, New Jersey increasingly relies on immigration for population growth. Hughes asserts that without substantial international immigration, the state’s population would have likely diminished over the years—an alteration that, he believes, has yielded significant benefits.
Looking ahead, census officials project that net migration could decrease further, potentially reaching just 321,000 nationwide by June 30. If this trend endures, New Jersey could face negative net immigration—an unprecedented situation in over half a century.
The state’s population grew by fewer than 16,000 people last year under net migration, a stark contrast to the 86,000 rise seen the previous year. Presently, New Jersey continues to witness more residents relocating out of the state, with an estimated 37,000 departing between 2024 and 2025. This figure, while lower than the post-pandemic surge, reflects a slight increase compared to last year.
Natural population growth, defined as the difference between births and deaths, has served as a primary driver, accounting for nearly two-thirds of the state’s recent growth. About 101,000 babies were born in New Jersey, which marks a slight dip from prior years, yet deaths also decreased during this period.
Concerns about population decline center on the potential shrinking of the tax base, crucial for funding educational institutions and community services. Jamie Greenberg, an education foundation professor at Montclair State University, warns that if families with school-age children begin to leave areas, it could lead to declining school populations, posing budgetary challenges and necessitating cuts in critical services.
Among New Jersey’s 21 counties, only Cape May County experienced a population drop last year, losing approximately 1,900 residents or about 2% of its total. Conversely, Ocean County, which has led population growth for over a decade, added about 5,400 residents, driven largely by migration from Brooklyn to Jewish communities around Lakewood. Essex County, the state’s second most populous area, saw an increase of nearly 34,000 people. Overall, New Jersey added roughly 260,000 residents from April 1, 2020, to July 1, 2025, translating to an increase of nearly 3%, with net migration accounting for a significant portion of this growth.
