I have data for 1 January 1938 and 1 January 1939.
1 January 1938 - 17.015 officers, 47.049 NCOs and 167.294 enlisted men (= 231.358 soldiers total)
1 January 1939 - 17.731 officers, 49.470 NCOs and 189.177 enlisted men (= 256.378 soldiers total).
These numbers do not include KOP* (I have data for KOP on 10 May 1939 - 907 officers, 3.465 NCOs & 21.000 enlisted men = 25.372 soldiers total).
They also - most likely - do not include
Obrona Narodowa - National Defence.
I also have a breakdown of these numbers for individual branches of Armed Forces:
1 January 1938:
Branch - officers/NCOs/enlisted(total)-percent
Infantry - 5387/17497/83749(106633)-46,1%
Cavalry - 1415/3762/27573(32750)-14,2%
Artillery - 2108/4996/24569(31673)-13,7%
Armour - 454/2356/6532(9342)-4,0%
Anti-Air & Anti-Gas - 177/433/1862(2472)-1,1%
Sappers & Fortification Service - 673/1526/4545(6744)-2,9%
Liaison - 378/1204/4458(6040)-2,6%
Air Force - 1073/2651/6229(9953)-4,3%
Fleet - 502/2094/3181(5777)-2,5%
The summ is not 100% (but 91,4%) - so not all branches were included.
1 January 1939:
Branch - officers/NCOs/enlisted(total)-percent
Infantry - 5578/17354/94563(117495)-45,9%
Cavalry - 1451/3927/28510(33888)-13,2%
Artillery - 2084/5053/30393(37530)-14,7%
Armour - 461/2444/7197(10102)-3,9%
Anti-Air & Anti-Gas - 259/604/2471(3334)-1,3%
Sappers & Fortification Service - 691/1614/5781(8086)-3,2%
Liaison - 409/1239/5177(6825)-2,7%
Air Force - 1149/3404/6829(11382)-4,4%
Fleet - 537/2331/3853(6721)-2,6%
The summ is not 100% (but 91,9%) - so not all branches were included.
*KOP = Border Defense Corps (in the East).
The number of divisions was the same as in 1939. That means - 30 active infantry divisions.
9 more reserve divisions were planned to be formed in case of war.
As for the rest - when I will have more time, I will check my sources.
But I think it will be hard to find data precisely for October 1938.
I surely have data for 15.03.1939 and for 1936. But I'm not sure if I have data for 1938.