GeoIP is not a free database, but a limited versions (countries only) are available freely. Ubuntu packages: geoip-bin, geoip-databases.
I can run it from command-line to get a country statistics for my website for the first ~3.5 months of the year 2021:
i@vps5:~/web/logs/smt.st$ cat access.log.2021-* | grep pdf | cut -f 1 -d ' ' | sort | uniq | xargs -L 1 geoiplookup | sort | uniq -c | sort -r -n | head -20
1769 GeoIP Country Edition: US, United States
307 GeoIP Country Edition: DE, Germany
279 GeoIP Country Edition: RU, Russian Federation
208 GeoIP Country Edition: FR, France
208 GeoIP Country Edition: CN, China
202 GeoIP Country Edition: GB, United Kingdom
187 GeoIP Country Edition: IN, India
119 GeoIP Country Edition: CA, Canada
80 GeoIP Country Edition: NL, Netherlands
80 GeoIP Country Edition: IP Address not found
77 GeoIP Country Edition: ES, Spain
69 GeoIP Country Edition: JP, Japan
65 GeoIP Country Edition: IT, Italy
64 GeoIP Country Edition: IE, Ireland
63 GeoIP Country Edition: UA, Ukraine
59 GeoIP Country Edition: BR, Brazil
54 GeoIP Country Edition: PL, Poland
53 GeoIP Country Edition: KR, Korea, Republic of
53 GeoIP Country Edition: CZ, Czech Republic
48 GeoIP Country Edition: SG, Singapore
cat access.log.2021-* -- Apache log files for only this year.
grep pdf -- leave only HTTP requests for pdf files.
cut -f 1 -d ' ' -- leave only first column (IP of host).
sort | uniq -- leave only unique hosts.
xargs -L 1 geoiplookup -- run geoiplookup command for each line in pipe, produce country name to stdout.
sort | uniq -c -- sort all countries and count statistics.
sort -r -n -- sort only first column in stdin (count for each country).
head -20 -- leave only 20 entries.
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