population graph
According to Portland State University's Population Research Center:

Newberg's July 1, 2022 population was 25,767 
Yamhill County's population count as of July 1, 2022 was 108,993

According to the U.S. Census Bureau:

Newberg's population as of July 1, 2021 was 25,477  
Yamhill County's population count as of July 1,2021 was 108,239

 

According to new preliminary estimates from Portland State University’s Population Research Center (PRC):

All of Oregon’s population grew by approximately 15,000 (+0.35%) from 4,263,827 on July 1, 2021 to 4,278,555 on July 1, 2022.
Oregons population has 
increased by more than 40,000 since the 2020 Census (an annualized rate of 0.42%).

City of Newberg population grew by approximately 391 (+1.5%) from 25,376 on July 1, 2021 to 25,767 on July 1, 2022. 
Newbergs population has increased by more than 600 since the 2020 Census (an annualized rate of 1.2%)

Yamhill County's population grew by approximately 682 (+.63%) from 108,311 on July 1, 2021 to 108,993 on July 1, 2022. 
Yamhill County's population has increased by more than 1,200 since the 2020 Census (an annualized rate of .58%)

The adopted population forecast for the the Newberg urban area is as follows.

 

Past Population   Forecast Populations
Newberg City Limits   Newberg 
Year Estimated Population   Year Projected Population
1950 3,934      
1960 4,204   2020 24,877
1970 6,507   2025 26,557
1980 10,394   2030 28,432
1990 13,086   2035 30,576
2000 18,064   2040 32,780
2010 22,068      
2020 25,138      
Source:  U.S Census Bureau   Source:  Population Research Center, Portland State University

US Census information below: