The phrase "a population of approx" is correct and usable in written English.
It can be used when providing an estimate of the size of a population in a specific context, such as demographics or statistics.
Example: "The study focused on a population of approx 10,000 individuals living in the urban area."
Alternatives: "an estimated population of" or "a population of approximately".
The Waterford City Primary Care area serves a population of approx 47,000 people [ 26].
Varzob is a more mountainous district North of Dushanbe characterised by remote areas with spread-out villages and a population of approx. 57,000.
In the federal state of Bavaria, located in the southeast of Germany, population-based cancer registration commenced in 1998, and full-scale registration covering a population of approx. 12.4 million started in 2002.
A prospective cohort study was performed in the setting of Växjö Central Hospital's ENT-department, a secondary care facility in southern Sweden serving a population of approx. 126 000.
Its 53 communities have a population of 168,600 (approx)., 58% of whom are females.
Tallinn was divided into 84 sections according to neighborhoods, with a total population of approx. 390 000 persons.
We aim to invite 7 GP practices (population of approx 45,000 adults aged 18 years or over) from which we expect at least 2,700 LBP consulters per year.
The latter population of approx. 20 000 plants was established from bulbs planted in September 2005 supplied by The Boston Bulb Company Cradge Bankk, Spalding, UK) from a UK grower who collected the naturalized plants under licence and with permission from landowners in Norfolk, Yorkshire and Scotland.
Two schools were randomly selected within the Ratnapura municipality (urban population of approx. 50,000), Sri Lanka and all students aged 14-18 were assessed with self administered (pre tested, Sinhalese translations) questionnaires [Center for epidemiologic studies depression scale (CES-D), Anxiety screening test of suicide and mental health association international][ 3, 4].
Two schools were randomly selected within the Ratnapura municipality (urban population of approx. 50,000), Sri Lanka and all students aged 14-18 were assessed with self administered (pre tested, Sinhalese translations) questionnaires [Center for epidemiologic studies depression scale, Anxiety screening test of suicide and mental health association international].
At the beginning of the 'on' phase, a population of hot electrons was observed (for approx. 1 μs), with Te and ne approximately 50% higher than their time-averaged values.
