Monmouth County Population 2018

Monmouth County's estimated population is 625,846 with a growth rate of -0.15% in the past year according to the most recent United States census data. Monmouth County is the 5th largest county in New Jersey.

Year Population Growth Growth Rate
2016625,846-929-0.15%
2015626,775-996-0.16%
2014627,771-715-0.11%
2013628,486-296-0.05%
2012628,782-1,033-0.16%
2011629,815-975-0.15%
2010630,79077,66614.04%
1990553,12449,9519.93%
1980503,17343,7949.53%
1970459,379124,97837.37%
1960334,401109,07448.41%
1950225,32764,08939.75%
1940161,23814,0299.53%
1930147,20942,28440.30%
1920104,92510,19110.76%
191094,73412,67715.45%
190082,05712,92918.70%
189069,12813,59024.47%
188055,5389,34320.23%
187046,1956,84917.41%
186039,3469,03329.80%
185030,313-2,596-7.89%
184032,9093,67612.57%
183029,2334,19516.75%
182025,0382,88813.04%
181022,1502,27811.46%
180019,8722,95417.46%
179016,9180.00%

Monmouth County Population Growth

Population Data via

Monmouth County Race Data

Race Population Percentage
White531,13684.87%
Black or African American48,1407.69%
Asian34,4605.51%
Two or More Races10,8841.74%
American Indian and Alaska Native1,8020.29%
Native Hawaiian and Other Pacific Islander3530.06%

Monmouth County Population Pyramid

0k5k10k15k20k25k Male Population0k5k10k15k20k25k Female Population8580757065605550454035302520151050
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990