feature names in LogisticRegression()
We if you're using sklearn's LogisticRegression, then it's the same order as the column names appear in the training data. see below code.

#Train with Logistic regression
from sklearn.linear_model import LogisticRegression
from sklearn import metrics

model = LogisticRegression()
model.fit(X_train,Y_train)
#Print model parameters - the names and coefficients are in same order
print(model.coef_)
print(X_train.columns)


You may also verify using another library as below

import statsmodels.api as sm
logit_model=sm.Logit(Y_train,X_train)
result=logit_model.fit()
print(result.summary2())